diff --git a/rpmio/rpmio.c b/rpmio/rpmio.c
index 9f4a60aa15..2b8ff60318 100644
--- a/rpmio/rpmio.c
+++ b/rpmio/rpmio.c
@@ -798,6 +798,7 @@ static LZFILE *lzopen_internal(const char *mode, int fd, int xz)
 		 * should've processed
 		 * */
 		while (isdigit(*++mode));
+		--mode;
 	    }
 #ifdef HAVE_LZMA_MT
 	    else