diff --git a/s-pipes-core/src/main/java/cz/cvut/spipes/engine/ExecutionContextFactory.java b/s-pipes-core/src/main/java/cz/cvut/spipes/engine/ExecutionContextFactory.java
index 3823faed..f8513cc1 100644
--- a/s-pipes-core/src/main/java/cz/cvut/spipes/engine/ExecutionContextFactory.java
+++ b/s-pipes-core/src/main/java/cz/cvut/spipes/engine/ExecutionContextFactory.java
@@ -1,7 +1,13 @@
 package cz.cvut.spipes.engine;
 
+import cz.cvut.spipes.util.CoreConfigProperies;
+import org.apache.jena.query.QuerySolution;
+import org.apache.jena.query.QuerySolutionMap;
 import org.apache.jena.rdf.model.Model;
 import org.apache.jena.rdf.model.ModelFactory;
+import org.apache.jena.rdf.model.ResourceFactory;
+
+import java.util.Map;
 
 public class ExecutionContextFactory {
 
@@ -11,21 +17,21 @@ public class ExecutionContextFactory {
     public static ExecutionContext createEmptyContext() {
         ExecutionContextImpl context = new ExecutionContextImpl();
         context.setDefaultModel(ModelFactory.createDefaultModel());
-        context.setVariablesBinding(new VariablesBinding());
+        context.setVariablesBinding(extendByConfigurationVariables(new VariablesBinding()));
         return context;
     }
 
     public static ExecutionContext createContext(Model defaultModel, VariablesBinding variablesBinding) {
         ExecutionContextImpl context = new ExecutionContextImpl();
         context.setDefaultModel(defaultModel);
-        context.setVariablesBinding(variablesBinding);
+        context.setVariablesBinding(extendByConfigurationVariables(variablesBinding));
         return context;
     }
 
     public static ExecutionContext createContext(VariablesBinding variablesBinding) {
         ExecutionContextImpl context = new ExecutionContextImpl();
         context.setDefaultModel(ModelFactory.createDefaultModel());
-        context.setVariablesBinding(variablesBinding);
+        context.setVariablesBinding(extendByConfigurationVariables(variablesBinding));
         return context;
     }
 
@@ -34,8 +40,25 @@ public static ExecutionContext createContext(VariablesBinding variablesBinding)
     public static ExecutionContext createContext(Model defaultModel) {
         ExecutionContextImpl context = new ExecutionContextImpl();
         context.setDefaultModel(defaultModel);
-        context.setVariablesBinding(new VariablesBinding());
+        context.setVariablesBinding(extendByConfigurationVariables(new VariablesBinding()));
         return context;
     }
 
+    private static VariablesBinding extendByConfigurationVariables(VariablesBinding variable) {
+        Map<String,String> map = CoreConfigProperies.getConfigurationVariables();
+        variable.extendConsistently(new VariablesBinding(transform(map)));
+        return variable;
+    }
+
+    private static QuerySolution transform(final Map<String,String> parameters) {
+        final QuerySolutionMap querySolution = new QuerySolutionMap();
+
+        parameters.entrySet()
+                .stream()
+                .filter(parameter -> parameter.getKey().startsWith(CoreConfigProperies.variableAssignmentPrefix))
+                .forEach(
+                e -> querySolution.add(e.getKey(), ResourceFactory.createPlainLiteral(e.getValue()))
+        );
+        return querySolution;
+    }
 }
diff --git a/s-pipes-core/src/main/java/cz/cvut/spipes/engine/VariablesBinding.java b/s-pipes-core/src/main/java/cz/cvut/spipes/engine/VariablesBinding.java
index ed532209..a4fb5bfd 100644
--- a/s-pipes-core/src/main/java/cz/cvut/spipes/engine/VariablesBinding.java
+++ b/s-pipes-core/src/main/java/cz/cvut/spipes/engine/VariablesBinding.java
@@ -1,5 +1,6 @@
 package cz.cvut.spipes.engine;
 
+import cz.cvut.spipes.util.CoreConfigProperies;
 import org.apache.jena.query.QuerySolution;
 import org.apache.jena.query.QuerySolutionMap;
 import org.apache.jena.rdf.model.*;
@@ -179,12 +180,14 @@ public void load(final InputStream is, final String lang) throws IOException {
 
     @Override
     public String toString() {
-        return binding.asMap().toString();
+        return getVariablesWithoutConfigurationOnes().toString();
     }
 
     public String toTruncatedString() {
-        return binding.asMap().entrySet().stream()
-            .map(e -> new AbstractMap.SimpleEntry<>(e.getKey(), getTruncatedValue(e.getValue().toString()))).
+        Map<String,String> map = getVariablesWithoutConfigurationOnes();
+
+        return map.entrySet().stream()
+            .map(e -> new AbstractMap.SimpleEntry<>(e.getKey(), getTruncatedValue(e.getValue()))).
             collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)).toString();
     }
 
@@ -194,4 +197,11 @@ private static String getTruncatedValue(@NotNull String value) {
         }
         return value;
     }
+
+    private Map<String, String> getVariablesWithoutConfigurationOnes(){
+        return binding.asMap().entrySet()
+                .stream()
+                .filter(entry -> !entry.getKey().startsWith(CoreConfigProperies.variableAssignmentPrefix))
+                .collect(Collectors.toMap(Map.Entry::getKey, o -> o.getValue().toString(), (x, y) -> y, HashMap::new));
+    }
 }
diff --git a/s-pipes-core/src/main/java/cz/cvut/spipes/util/CoreConfigProperies.java b/s-pipes-core/src/main/java/cz/cvut/spipes/util/CoreConfigProperies.java
index 00be2af4..05a3c768 100644
--- a/s-pipes-core/src/main/java/cz/cvut/spipes/util/CoreConfigProperies.java
+++ b/s-pipes-core/src/main/java/cz/cvut/spipes/util/CoreConfigProperies.java
@@ -6,8 +6,12 @@
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
 
 public class CoreConfigProperies {
+    public static final String variableAssignmentPrefix = "variable.assignment";
     private static final String CONFIG_FILE = "config-core.properties";
     private static final java.util.Properties prop = new java.util.Properties();
     private static final Logger LOG = LoggerFactory.getLogger(CoreConfigProperies.class);
@@ -38,6 +42,13 @@ public class CoreConfigProperies {
         }
     }
 
+    public static Map<String,String> getConfigurationVariables(){
+        Map<String, String> map = new HashMap<>((Map) prop);
+        return map.entrySet()
+                .stream()
+                .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (x, y) -> y, HashMap::new));
+    }
+
     public static String get(String name) {
         String value = prop.getProperty(name);
         if (value == null) {
diff --git a/s-pipes-modules/module-rdf4j/src/main/java/cz/cvut/spipes/modules/Rdf4jModule.java b/s-pipes-modules/module-rdf4j/src/main/java/cz/cvut/spipes/modules/Rdf4jModule.java
index 69f2a698..81c62ade 100644
--- a/s-pipes-modules/module-rdf4j/src/main/java/cz/cvut/spipes/modules/Rdf4jModule.java
+++ b/s-pipes-modules/module-rdf4j/src/main/java/cz/cvut/spipes/modules/Rdf4jModule.java
@@ -4,6 +4,7 @@
 import cz.cvut.spipes.engine.ExecutionContext;
 import cz.cvut.spipes.engine.ExecutionContextFactory;
 import cz.cvut.spipes.engine.VariablesBinding;
+import cz.cvut.spipes.util.CoreConfigProperies;
 import org.apache.jena.rdf.model.Property;
 import org.apache.jena.rdf.model.RDFNode;
 import org.apache.jena.rdf.model.ResourceFactory;
@@ -29,12 +30,12 @@
 import java.io.StringWriter;
 import java.util.Optional;
 
-public class Rdf4jModule extends AbstractModule {
+public class Rdf4jModule extends AnnotatedAbstractModule {
 
     private static final Logger LOG = LoggerFactory.getLogger(Rdf4jModule.class);
 
     private static String TYPE_URI = KBSS_MODULE.getURI()+"deploy";
-    private static String PROPERTY_PREFIX_URI = KBSS_MODULE.getURI()+"rdf4j";
+    private static final String PROPERTY_PREFIX_URI = KBSS_MODULE.uri + "rdf4j";
 
     private static Property getParameter(final String name) {
         return ResourceFactory.createProperty(PROPERTY_PREFIX_URI + "/" + name);
@@ -64,6 +65,12 @@ private static Property getParameter(final String name) {
     static final Property P_IS_REPLACE_CONTEXT_IRI = getParameter("p-is-replace");
     private boolean isReplaceContext;
 
+    @Parameter(urlPrefix = PROPERTY_PREFIX_URI + "/", name = "p-rdf4j-secured-username-variable")
+    private String securedUsername;
+
+    @Parameter(urlPrefix = PROPERTY_PREFIX_URI + "/", name = "p-rdf4j-secured-password-variable")
+    private String securedPassword;
+
     public String getRdf4jServerURL() {
         return rdf4jServerURL;
     }
@@ -108,12 +115,12 @@ ExecutionContext executeSelf() {
         VariablesBinding variablesBinding = getExecutionContext().getVariablesBinding();
 
         String username = Optional
-                .ofNullable(variablesBinding.getNode("p-username"))
+                .ofNullable(variablesBinding.getNode(CoreConfigProperies.variableAssignmentPrefix + "." + securedUsername))
                 .map(RDFNode::toString)
                 .orElse(null);
 
         String password = Optional
-                .ofNullable(variablesBinding.getNode("p-password"))
+                .ofNullable(variablesBinding.getNode(CoreConfigProperies.variableAssignmentPrefix + "." + securedPassword))
                 .map(RDFNode::toString)
                 .orElse(null);
 
@@ -181,6 +188,7 @@ public String getTypeURI() {
 
     @Override
     public void loadConfiguration() {
+        super.loadConfiguration();
         rdf4jServerURL = getEffectiveValue(P_RDF4J_SERVER_URL).asLiteral().getString();
         rdf4jRepositoryName = getEffectiveValue(P_RDF4J_REPOSITORY_NAME).asLiteral().getString();
         if (this.getPropertyValue(P_RDF4J_CONTEXT_IRI) != null) {