--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1953,6 +1953,7 @@ elseif(WINDOWS)
   check_c_source_compiles("
     #include <stdbool.h>
     #define COBJMACROS
+    #error SDL does not build on Github Actions with GameInput
     #include <gameinput.h>
     int main(int argc, char **argv) { return 0; }" HAVE_GAMEINPUT_H
   )