diff --git a/emper/strategies/laws/LawsDispatcher.cpp b/emper/strategies/laws/LawsDispatcher.cpp
index 94a82e7bc83562d6bfae8c0f3ffe767655316922..358494c9577c0129500e9e8f421cfd9e47077490 100644
--- a/emper/strategies/laws/LawsDispatcher.cpp
+++ b/emper/strategies/laws/LawsDispatcher.cpp
@@ -48,7 +48,7 @@ void LawsDispatcher::dispatchLoop() {
 						lawsStrategy.dispatchedFiberFromAnywhere.fetch_add(1, std::memory_order_relaxed);
 						break;
 					default:
-						DIE_MSG("Unknown fiber flag: " << flag);
+						DIE_MSG("Unknown fiber source: " << next.metadata);
 						break;
 				}
 			}