diff --git a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientCloudVisitor.java b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientCloudVisitor.java
index f3d62f0..2ca54e0 100644
--- a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientCloudVisitor.java
+++ b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientCloudVisitor.java
@@ -60,7 +60,7 @@ public void send(StandardCredentials credentials, Verb verb, String url, String
         logger.log(Level.FINEST, "Result of the status notification is: {0}, with status code: {1}",
             new Object[] {responseBody, response.getStatusLine().getStatusCode()});
       } catch (IOException e) {
-        logger.log(Level.WARNING, "Error during state notification: {} ", e.getMessage());
+        logger.log(Level.WARNING, "Error during state notification: {0} ", e.getMessage());
       }
     else if (credentials instanceof StringCredentials) {
       try {
@@ -69,7 +69,7 @@ else if (credentials instanceof StringCredentials) {
         logger.log(Level.FINEST, "Result of the state notification is: {0}, with status code: {1}",
             new Object[] {response.getBody(), response.getCode()});
       } catch (ExecutionException | IOException e) {
-        logger.log(Level.WARNING, "Error during state notification: {} ", e.getMessage());
+        logger.log(Level.WARNING, "Error during state notification: {0} ", e.getMessage());
       } catch (InterruptedException e) {
         throw e;
       }
diff --git a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientServerVisitor.java b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientServerVisitor.java
index 954846a..fd24c67 100644
--- a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientServerVisitor.java
+++ b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/client/BitBucketPPRClientServerVisitor.java
@@ -63,7 +63,7 @@ public void send(StandardCredentials credentials, Verb verb, String url, String
         logger.log(Level.FINEST, "Result of the status notification is: {0}, with status code: {1}",
             new Object[] {responseBody, response.getStatusLine().getStatusCode()});
       } catch (IOException e) {
-        logger.log(Level.WARNING, "Error during state notification: {} ", e.getMessage());
+        logger.log(Level.WARNING, "Error during state notification: {0} ", e.getMessage());
       }
     else if (credentials instanceof StringCredentials)
       try {
@@ -73,7 +73,7 @@ else if (credentials instanceof StringCredentials)
                 response.getStatusLine().getStatusCode()});
       } catch (ExecutionException | IOException | KeyManagementException | NoSuchAlgorithmException
           | KeyStoreException e) {
-        logger.log(Level.WARNING, "Error du" + "ring state notification: {} ", e.getMessage());
+        logger.log(Level.WARNING, "Error du" + "ring state notification: {0} ", e.getMessage());
       } catch (InterruptedException e) {
         throw e;
       }
diff --git a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/common/BitBucketPPRUtils.java b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/common/BitBucketPPRUtils.java
index f662877..646f917 100644
--- a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/common/BitBucketPPRUtils.java
+++ b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/common/BitBucketPPRUtils.java
@@ -89,7 +89,7 @@ public static boolean matchWithRegex(@Nonnull String haystack, @Nonnull String p
     }
 
     if (patternStr == null || patternStr.trim().isEmpty()) {
-      logger.fine(String.format("The regex filter on the comment from BB is null or it is empty", new Object[] {}));
+      logger.fine("The regex filter on the comment from BB is null or it is empty");
       return true;
     }
 
diff --git a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRHandlerTemplate.java b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRHandlerTemplate.java
index ffdd876..4449132 100644
--- a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRHandlerTemplate.java
+++ b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRHandlerTemplate.java
@@ -90,7 +90,7 @@ protected void callClient(@Nonnull String url, @Nonnull Map<String, String> payl
       String jsonPayload = objectMapper.writeValueAsString(payload);
       BitBucketPPRClientFactory.createClient(clientType, context).send(url, jsonPayload);
     } catch (JsonProcessingException e) {
-      logger.log(Level.WARNING, "Cannot create payload: {}", e.getMessage());
+      logger.log(Level.WARNING, "Cannot create payload: {0}", e.getMessage());
     } catch (Exception e) {
       logger.warning(e.getMessage());
     }
@@ -104,7 +104,7 @@ protected void callClient(@Nonnull Verb verb, @Nonnull String url,
       String jsonPayload = payload.isEmpty() ? "" : objectMapper.writeValueAsString(payload);
       BitBucketPPRClientFactory.createClient(clientType, context).send(verb, url, jsonPayload);
     } catch (JsonProcessingException e) {
-      logger.log(Level.WARNING, "Cannot create payload: {}", e.getMessage());
+      logger.log(Level.WARNING, "Cannot create payload: {0}", e.getMessage());
     } catch (Exception e) {
       logger.warning(e.getMessage());
     }
diff --git a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRObserverFactory.java b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRObserverFactory.java
index cd8981f..6bf6154 100644
--- a/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRObserverFactory.java
+++ b/src/main/java/io/jenkins/plugins/bitbucketpushandpullrequest/observer/BitBucketPPRObserverFactory.java
@@ -43,28 +43,28 @@ public static BitBucketPPRObservable createObservable(
 
     if (REPOSITORY_EVENT.equalsIgnoreCase(bitbucketEvent.getEvent())
         && REPOSITORY_CLOUD_PUSH.equalsIgnoreCase(bitbucketEvent.getAction())) {
-      logger.log(Level.FINE, "Add BitBucketPPRPushCloudObserver for {}", bitbucketEvent);
+      logger.log(Level.FINE, "Add BitBucketPPRPushCloudObserver for {0}", bitbucketEvent);
       observable.addObserver(new BitBucketPPRPushCloudObserver());
     }
 
     if (REPOSITORY_EVENT.equalsIgnoreCase(bitbucketEvent.getEvent())
         && REPOSITORY_SERVER_PUSH.equalsIgnoreCase(bitbucketEvent.getAction())) {
-      logger.log(Level.FINE, "Add BitBucketPPRPushServerObserver for {}", bitbucketEvent);
+      logger.log(Level.FINE, "Add BitBucketPPRPushServerObserver for {0}", bitbucketEvent);
       observable.addObserver(new BitBucketPPRPushServerObserver());
     }
 
     if (PULL_REQUEST_CLOUD_EVENT.equals(bitbucketEvent.getEvent())) {
-      logger.log(Level.FINE, "Add BitBucketPPRPullRequestCloudObserver for {}", bitbucketEvent);
+      logger.log(Level.FINE, "Add BitBucketPPRPullRequestCloudObserver for {0}", bitbucketEvent);
       observable.addObserver(new BitBucketPPRPullRequestCloudObserver());
     }
 
     if (PULL_REQUEST_SERVER_EVENT.equals(bitbucketEvent.getEvent())) {
-      logger.log(Level.FINE, "Add BitBucketPPRPullRequestServerObserver for {}", bitbucketEvent);
+      logger.log(Level.FINE, "Add BitBucketPPRPullRequestServerObserver for {0}", bitbucketEvent);
       observable.addObserver(new BitBucketPPRPullRequestServerObserver());
     }
 
     if (observable.getObservers().isEmpty())
-      logger.log(Level.FINE, "No observer found for the observable of event {}", bitbucketEvent);
+      logger.log(Level.FINE, "No observer found for the observable of event {0}", bitbucketEvent);
 
     return observable;
   }