1 files changed, 1 insertions, 0 deletions
diff --git a/XUtils.c b/XUtils.c
index a444a7f8..811fa50f 100644
--- a/XUtils.c
+++ b/XUtils.c
@@ -9,6 +9,7 @@ in the source distribution for its full text.
 
 #include "XUtils.h"
 
+#include <assert.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>