diff --git a/core/src/main/java/org/teavm/cache/VarDataInput.java b/core/src/main/java/org/teavm/cache/VarDataInput.java
index 24806ed0e..7c0050bf3 100644
--- a/core/src/main/java/org/teavm/cache/VarDataInput.java
+++ b/core/src/main/java/org/teavm/cache/VarDataInput.java
@@ -65,7 +65,7 @@ public class VarDataInput {
 
     public long readSignedLong() throws IOException {
         long value = readUnsignedLong();
-        return (value & 1) == 0 ? (value >> 1) : ~(value >> 1);
+        return (value & 1) == 0 ? (value >>> 1) : ~(value >>> 1);
     }
 
     public float readFloat() throws IOException {