diff --git a/pkg/workflows/wasm/host/module.go b/pkg/workflows/wasm/host/module.go
index 48aa75118..f8bd77d02 100644
--- a/pkg/workflows/wasm/host/module.go
+++ b/pkg/workflows/wasm/host/module.go
@@ -736,7 +736,5 @@ func write(memory, src []byte, ptr, size int32) int64 {
 		return -1
 	}
 	buffer := memory[ptr : ptr+size]
-	dataLen := int64(len(src))
-	copy(buffer, src)
-	return dataLen
+	return int64(copy(buffer, src))
 }