diff --git a/src/hotspot/cpu/zero/zeroInterpreter_zero.cpp b/src/hotspot/cpu/zero/zeroInterpreter_zero.cpp
index 1fcc8ef0f22..7c4c1f73908 100644
--- a/src/hotspot/cpu/zero/zeroInterpreter_zero.cpp
+++ b/src/hotspot/cpu/zero/zeroInterpreter_zero.cpp
@@ -138,7 +138,9 @@ intptr_t narrow(BasicType type, intptr_t result) {
     case T_DOUBLE:
     case T_VOID:
       return result;
-    default  : ShouldNotReachHere();
+    default:
+      ShouldNotReachHere();
+      return result; // silence compiler warnings
   }
 }