diff --git a/core/src/main/java/org/teavm/backend/wasm/WasmTarget.java b/core/src/main/java/org/teavm/backend/wasm/WasmTarget.java
index 7627fab7e..c480682ec 100644
--- a/core/src/main/java/org/teavm/backend/wasm/WasmTarget.java
+++ b/core/src/main/java/org/teavm/backend/wasm/WasmTarget.java
@@ -661,6 +661,7 @@ public class WasmTarget implements TeaVMTarget {
 
         gcMemory -= regionCount * 2;
         address += regionCount * 2;
+        address = (address + 4) >> 2 << 2;
         gcIntrinsic.setHeapAddress(address);
         gcIntrinsic.setAvailableBytes(gcMemory);
     }