diff --git a/interop/src/cpp/callback-resource.cc b/interop/src/cpp/callback-resource.cc
index db3fad3587dd62cb06e0cc1264400c73bfeb2dec..b4893843264b250372cba8cbc7c533ced8651c92 100644
--- a/interop/src/cpp/callback-resource.cc
+++ b/interop/src/cpp/callback-resource.cc
@@ -15,6 +15,7 @@
 
 #define KOALA_INTEROP_MODULE InteropNativeModule
 #include "common-interop.h"
+#include "interop-types.h"
 #include "callback-resource.h"
 #include <deque>
 #include <unordered_map>
@@ -54,7 +55,7 @@ KInt impl_CheckCallbackEvent(KByte* result, KInt size) {
                 callbackResourceSubqueue.pop_front();
                 break;
             default:
-                throw "Unknown event kind";
+                INTEROP_FATAL("Unknown event kind");
         }
         callbackEventsQueue.pop_front();
         needReleaseFront = false;
@@ -76,7 +77,7 @@ KInt impl_CheckCallbackEvent(KByte* result, KInt size) {
             break;
         }
         default:
-            throw "Unknown event kind";
+            INTEROP_FATAL("Unknown event kind");
     }
     needReleaseFront = true;
     return 1;