diff --git a/ch15/stdcpy.c b/ch15/stdcpy.c
index c4fbc3f..ea523ba 100644
--- a/ch15/stdcpy.c
+++ b/ch15/stdcpy.c
@@ -7,8 +7,8 @@ int main(int argc, char *argv[])
     FILE *fp2;
     char buf[BUF_SZIE];
 
-    fp1 = open("news.txt", "r");
-    fp2 = open("cpy.txt", "w");
+    fp1 = fopen("news.txt", "r");
+    fp2 = fopen("cpy.txt", "w");
 
     while (fgets(buf, BUF_SZIE, fp1) != NULL)
         fputs(buf, fp2);