diff --git a/src/java/net/jpountz/lz4/LZ4BlockInputStream.java b/src/java/net/jpountz/lz4/LZ4BlockInputStream.java
index 23fd5e3..30e63e3 100644
--- a/src/java/net/jpountz/lz4/LZ4BlockInputStream.java
+++ b/src/java/net/jpountz/lz4/LZ4BlockInputStream.java
@@ -257,7 +257,7 @@ private void refill() throws IOException {
     }
     checksum.reset();
     checksum.update(buffer, 0, originalLen);
-    if ((int) checksum.getValue() != check) {
+    if ((int) (checksum.getValue() & 0x0FFFFFFF) != check) {
       throw new IOException("Stream is corrupted");
     }
     o = 0;
diff --git a/src/java/net/jpountz/lz4/LZ4BlockOutputStream.java b/src/java/net/jpountz/lz4/LZ4BlockOutputStream.java
index 623eb1c..063f922 100644
--- a/src/java/net/jpountz/lz4/LZ4BlockOutputStream.java
+++ b/src/java/net/jpountz/lz4/LZ4BlockOutputStream.java
@@ -206,7 +206,7 @@ private void flushBufferedData() throws IOException {
     }
     checksum.reset();
     checksum.update(buffer, 0, o);
-    final int check = (int) checksum.getValue();
+    final int check = (int) (checksum.getValue() & 0x0FFFFFFF);
     int compressedLength = compressor.compress(buffer, 0, o, compressedBuffer, HEADER_LENGTH);
     final int compressMethod;
     if (compressedLength >= o) {
diff --git a/src/java/net/jpountz/xxhash/StreamingXXHash32.java b/src/java/net/jpountz/xxhash/StreamingXXHash32.java
index 8143433..eb5f608 100644
--- a/src/java/net/jpountz/xxhash/StreamingXXHash32.java
+++ b/src/java/net/jpountz/xxhash/StreamingXXHash32.java
@@ -103,7 +103,7 @@ public final Checksum asChecksum() {
 
       @Override
       public long getValue() {
-        return StreamingXXHash32.this.getValue() & 0xFFFFFFFL;
+        return StreamingXXHash32.this.getValue() & 0xFFFFFFFFL;
       }
 
       @Override