diff --git a/core/src/main/java/org/teavm/common/LoopGraph.java b/core/src/main/java/org/teavm/common/LoopGraph.java
index 6ba7c2f9e..cf273f376 100644
--- a/core/src/main/java/org/teavm/common/LoopGraph.java
+++ b/core/src/main/java/org/teavm/common/LoopGraph.java
@@ -175,7 +175,7 @@ public class LoopGraph implements Graph {
                 if (loop == testLoop) {
                     return bestLoop;
                 }
-                if (loop.walkIndex < testLoop.walkIndex) {
+                if (loop.parent.walkIndex < testLoop.walkIndex) {
                     testLoop.parent = loop.parent;
                     loop.parent = testLoop;
                     break;