diff --git a/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java b/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
index 36054ae6e4bbe72e54bdd5e41bd0f22947c18453..0b6eaa69629cb342b3a942f3a02871c5f16f5b65 100644
--- a/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
+++ b/src/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
@@ -1299,7 +1299,7 @@ public class LambdaToMethod extends TreeTranslator {
             buf.append(owner.name);
             buf.append('$');
             int methTypeHash = methodSig(owner.type).hashCode();
-            buf.append(methTypeHash);
+            buf.append(Integer.toHexString(methTypeHash));
             buf.append('$');
             String temp = buf.toString();
             Integer count = serializableLambdaCounts.get(temp);