diff --git a/tools/llvmc2/llvmc.cpp b/tools/llvmc2/llvmc.cpp
index 65f5e114551..bb818c31706 100644
--- a/tools/llvmc2/llvmc.cpp
+++ b/tools/llvmc2/llvmc.cpp
@@ -83,4 +83,5 @@ int main(int argc, char** argv) {
   catch(...) {
     std::cerr << "Unknown error!\n";
   }
+  return 1;
 }