diff --git a/dm/DM.cpp b/dm/DM.cpp
index 9dcdff1a0f..4fcd321f96 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -846,6 +846,7 @@ int dm_main() {
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
+    SkASSERT(false);
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }