diff --git a/mount.c b/mount.c
index 6061758..db0f38a 100644
--- a/mount.c
+++ b/mount.c
@@ -106,10 +106,10 @@ catfile(FILE *in, FILE *out)
 	while (!feof(in)) {
 		bytesread = fread(buf, 1, sizeof(buf), in);
 		if (ferror(in))
-			return 0;
+			return -1;
 		fwrite(buf, 1, bytesread, out);
 	}
-	return 1;
+	return 0;
 }
 
 static void
@@ -160,7 +160,7 @@ main(int argc, char *argv[])
 	if (argc < 1 && aflag == 0) {
 		if (!(fp = fopen(files[0], "r")))
 			eprintf("fopen %s:", files[0]);
-		if (catfile(fp, stdout) != 1) {
+		if (catfile(fp, stdout) == -1) {
 			weprintf("error while reading %s:", files[0]);
 			status = 1;
 		}