diff --git a/libraries/liblutil/md5.c b/libraries/liblutil/md5.c
index 0ad85cc898..12bb58b68c 100644
--- a/libraries/liblutil/md5.c
+++ b/libraries/liblutil/md5.c
@@ -185,7 +185,7 @@ lutil_MD5Final( unsigned char *digest, struct lutil_MD5Context *ctx )
 	putu32(ctx->buf[1], digest + 4);
 	putu32(ctx->buf[2], digest + 8);
 	putu32(ctx->buf[3], digest + 12);
-	memset(ctx, '\0', sizeof(ctx));	/* In case it's sensitive */
+	memset(ctx, '\0', sizeof(*ctx));	/* In case it's sensitive */
 }
 
 #ifndef ASM_MD5