- fixed a warning
diff --git a/biossums.c b/biossums.c
index 392d55c..d5816f4 100644
--- a/biossums.c
+++ b/biossums.c
@@ -17,6 +17,7 @@
  */
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 typedef unsigned char byte;