diff --git a/include/c99_alloca.h b/include/c99_alloca.h
index 7a81c50e0d7..575f719af87 100644
--- a/include/c99_alloca.h
+++ b/include/c99_alloca.h
@@ -35,13 +35,9 @@
 
 #  define alloca _alloca
 
-#elif defined(__MINGW32__)
-
-#  include <malloc.h>
-
 #else /* !defined(_MSC_VER) */
 
-#  include <alloca.h>
+#  include <stdlib.h>
 
 #endif /* !defined(_MSC_VER) */