diff --git a/nifi/nifi-commons/nifi-utils/src/main/java/org/apache/nifi/remote/io/CompressionInputStream.java b/nifi/nifi-commons/nifi-utils/src/main/java/org/apache/nifi/remote/io/CompressionInputStream.java
index 71cf894daf..d953185f90 100644
--- a/nifi/nifi-commons/nifi-utils/src/main/java/org/apache/nifi/remote/io/CompressionInputStream.java
+++ b/nifi/nifi-commons/nifi-utils/src/main/java/org/apache/nifi/remote/io/CompressionInputStream.java
@@ -142,7 +142,7 @@ public class CompressionInputStream extends InputStream {
             return -1;
         }
 
-        return buffer[bufferIndex++];
+        return buffer[bufferIndex++] & 0xFF;
     }
 
     @Override