diff --git a/src/snmalloc/pal/pal_windows.h b/src/snmalloc/pal/pal_windows.h
index 00017a7..ca63587 100644
--- a/src/snmalloc/pal/pal_windows.h
+++ b/src/snmalloc/pal/pal_windows.h
@@ -6,7 +6,8 @@
 
 #ifdef _WIN32
 #  ifndef _MSC_VER
-#    include <cstdio>
+#    include <errno.h>
+#    include <stdio.h>
 #  endif
 #  define WIN32_LEAN_AND_MEAN
 #  ifndef NOMINMAX