diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c
index ee84d3f..ae2ba6a 100644
--- a/fs/ext4/dev.c
+++ b/fs/ext4/dev.c
@@ -60,9 +60,8 @@
 	}
 
 	/* Check partition boundaries */
-	if ((sector < 0) ||
-	    ((sector + ((byte_offset + byte_len - 1) >> log2blksz))
-	     >= part_info->size)) {
+	if ((sector + ((byte_offset + byte_len - 1) >> log2blksz))
+	    >= part_info->size) {
 		printf("%s read outside partition " LBAFU "\n", __func__,
 		       sector);
 		return 0;