diff --git a/examples/utility.c b/examples/utility.c
index c4fb811fd4f52a0c0c53632148c5e35c90bb934b..fecf464f64ae5742fa6a24cd0086f8e7dc07fb8b 100644
--- a/examples/utility.c
+++ b/examples/utility.c
@@ -12,7 +12,7 @@ void check(const char* phase, int err) {
 
 // allocates a buffer!
 char * buffer_pdl(char * filename) {
-	FILE *f = fopen("forward.pdl", "rb");
+	FILE *f = fopen(filename, "rb");
 	if (f == NULL) {
 		printf("Opening pdl file returned errno %d!\n", errno);
 		exit(1);