diff --git a/Assignment9/src/main.c b/Assignment9/src/main.c
index 0d977be..01b2922 100644
--- a/Assignment9/src/main.c
+++ b/Assignment9/src/main.c
@@ -3,7 +3,6 @@
 #include <limits.h>
 #include <string.h>
 #include <stdbool.h>
-#include <unistd.h>
 #include "png.h"
 
 int main(int argc, char *argv[]) {