diff --git a/utils.c b/utils.c
index 49fdf5db5bb1e0333c2bd7e4b5955b3e4b73352b..a1ecb139bd3a5c9a084dde979ea01fa1410f7f02 100755
--- a/utils.c
+++ b/utils.c
@@ -10,6 +10,7 @@
  */
 
 #include <ctype.h>
+#include <string.h>
 #include <asterisk/lock.h>
 #include <asterisk/utils.h>