diff --git a/programs/highPoly.c b/programs/highPoly.c
index b966149..e08718a 100644
--- a/programs/highPoly.c
+++ b/programs/highPoly.c
@@ -6,6 +6,7 @@
 */
 
 #include <stdio.h>
+#include <string.h>
 
 #define S3L_STRICT_NEAR_CULLING 0