diff --git a/scripts/genie.lua b/scripts/genie.lua
index 9d686e1f274..ad60bc79252 100644
--- a/scripts/genie.lua
+++ b/scripts/genie.lua
@@ -805,6 +805,10 @@ end
 		"-O".. _OPTIONS["OPTIMIZE"],
 		"-fno-strict-aliasing"
 	}
+configuration { "mingw-clang" }
+	buildoptions {
+		"-O1", -- without this executable crash often
+	}
 
 	-- add the error warning flag
 if _OPTIONS["NOWERROR"]==nil then