diff --git a/aom_dsp/prob.c b/aom_dsp/prob.c
index 348592916c86628a1f99246af78453c1c673ab40..233ff4f7166a25684e2c0c5bca0854f4c0f2cb9a 100644
--- a/aom_dsp/prob.c
+++ b/aom_dsp/prob.c
@@ -9,6 +9,8 @@
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
 
+#include "./aom_config.h"
+
 #if CONFIG_DAALA_EC
 #include <string.h>
 #endif