diff --git a/src/main/java/org/surus/pig/RAD.java b/src/main/java/org/surus/pig/RAD.java
index bdba9c3..d58c7cf 100644
--- a/src/main/java/org/surus/pig/RAD.java
+++ b/src/main/java/org/surus/pig/RAD.java
@@ -178,7 +178,7 @@ public DataBag exec(Tuple input) throws IOException {
 			if (this.isForceDiff == null && dickeyFullerTest.isNeedsDiff()) {
 				// Auto Diff
 				inputArrayTransformed = dickeyFullerTest.getZeroPaddedDiff();
-			} else if (this.isForceDiff) {
+			} else if (Boolean.TRUE.equals(this.isForceDiff)) {
 				// Force Diff
 				inputArrayTransformed = dickeyFullerTest.getZeroPaddedDiff();
 			}