diff --git a/src/blob.c b/src/blob.c
index b5b4428..afc2de6 100644
--- a/src/blob.c
+++ b/src/blob.c
@@ -237,7 +237,7 @@
     {
 	if (i > 0 && (i & 3) == 0)
 	    ga_concat(&ga, (char_u *)".");
-	vim_snprintf((char *)numbuf, NUMBUFLEN, "%02X", (int)blob_get(blob, i));
+	vim_snprintf((char *)numbuf, NUMBUFLEN, "%02X", blob_get(blob, i));
 	ga_concat(&ga, numbuf);
     }
     ga_append(&ga, NUL);		// append a NUL at the end