diff --git a/.gitignore b/.gitignore
index 874c63c..e8cce76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.o
+.DS_Store
 
diff --git a/slant.c b/slant.c
index 70d7156..53afcb7 100644
--- a/slant.c
+++ b/slant.c
@@ -22,7 +22,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-main()
+int main()
 {
     int w, h,  wh, hh,  x, y;
     char s, t;