diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c
index dde8e84..edd17e0 100644
--- a/drivers/mtd/cmdlinepart.c
+++ b/drivers/mtd/cmdlinepart.c
@@ -347,7 +347,8 @@ static int parse_cmdline_partitions(struct mtd_info *master,
 					       "%s: partitioning exceeds flash size, truncating\n",
 					       part->mtd_id);
 					part->parts[i].size = master->size - offset;
-					part->num_parts = i;
+					part->num_parts = i + 1;
+					break;
 				}
 				offset += part->parts[i].size;
 			}