diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 57cbe7a29868327bf4ea5e4e8cf331d623eabe2d..5ddf84dcbae79652ef5eaac8d67333a43c8ae785 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1224,6 +1224,7 @@ int maps__merge_in(struct maps *kmaps, struct map *new_map)
 
 				m->end = old_map->start;
 				list_add_tail(&m->node, &merged);
+				new_map->pgoff += old_map->end - new_map->start;
 				new_map->start = old_map->end;
 			}
 		} else {
@@ -1244,6 +1245,7 @@ int maps__merge_in(struct maps *kmaps, struct map *new_map)
 				 *      |new......| ->         |new...|
 				 * |old....|        -> |old....|
 				 */
+				new_map->pgoff += old_map->end - new_map->start;
 				new_map->start = old_map->end;
 			}
 		}