diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/diff/SimilarityIndex.java b/org.eclipse.jgit/src/org/eclipse/jgit/diff/SimilarityIndex.java
index 6627268e4..853132589 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/diff/SimilarityIndex.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/diff/SimilarityIndex.java
@@ -230,8 +230,8 @@ class SimilarityIndex {
 					break;
 				srcKey = keyOf(srcHash[srcIdx]);
 
-			} else /* if (srcKey > dstKey) */{
-				// Regions of dst which do not appear in dst.
+			} else /* if (dstKey < srcKey) */{
+				// Regions of dst which do not appear in src.
 				if (++dstIdx == dstHash.length)
 					break;
 				dstKey = keyOf(dstHash[dstIdx]);