diff --git a/biplabg.c b/biplabg.c
index 36d6480..7ef6661 100644
--- a/biplabg.c
+++ b/biplabg.c
@@ -111,13 +111,13 @@ main(int argc, char *argv[])
 	    fflush(stderr);
 	}
 
-	NODIGRAPHSYET(codetype);
-
 	if (infilename && infilename[0] == '-') infilename = NULL;
 	infile = opengraphfile(infilename,&codetype,FALSE,1);
 	if (!infile) exit(1);
 	if (!infilename) infilename = "stdin";
 
+	NODIGRAPHSYET(codetype);
+
 	if (!outfilename || outfilename[0] == '-')
 	{
 	    outfilename = "stdout";