1 files changed, 1 insertions, 1 deletions
diff --git a/pngread.c b/pngread.c
index 5cd20e8c3..96e79f63c 100644
--- a/pngread.c
+++ b/pngread.c
@@ -15,7 +15,7 @@
  */
 
 #include "pngpriv.h"
-#if defined PNG_SIMPLIFIED_READ_SUPPORTED && defined PNG_STDIO_SUPPORTED
+#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
 #  include <errno.h>
 #endif