1 files changed, 1 insertions, 1 deletions
diff --git a/forktest.c b/forktest.c
index 73f2fe8..8bc984d 100644
--- a/forktest.c
+++ b/forktest.c
@@ -8,7 +8,7 @@
 #define N  1000
 
 void
-printf(int fd, char *s, ...)
+printf(int fd, const char *s, ...)
 {
   write(fd, s, strlen(s));
 }