diff -u -r libbs2b-3.1.0/src/bs2bconvert.c libbs2b-3.1.0-formatsecurity/src/bs2bconvert.c
--- libbs2b-3.1.0/src/bs2bconvert.c	2009-06-04 18:01:15.000000000 +0000
+++ libbs2b-3.1.0-formatsecurity/src/bs2bconvert.c	2022-07-18 19:02:24.764809592 +0000
@@ -153,7 +153,7 @@
 	if( ( infile = sf_open( infilename, SFM_READ, &sfinfo ) ) == NULL )
 	{
 		printf( "Not able to open input file %s.\n", infilename );
-		printf( sf_strerror( NULL ) );
+		printf( "%s", sf_strerror( NULL ) );
 		return 1;
 	}