diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c
index ca0bedf637c243135d40ffafc41562aa3a047c7d..59b65d0bd7c1c175225c25041d4e3c535cd3cc01 100644
--- a/tools/perf/util/data_map.c
+++ b/tools/perf/util/data_map.c
@@ -100,11 +100,11 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
 	}
 }
 
-int perf_header__read_build_ids(int input, off_t offset, off_t size)
+int perf_header__read_build_ids(int input, u64 offset, u64 size)
 {
 	struct build_id_event bev;
 	char filename[PATH_MAX];
-	off_t limit = offset + size;
+	u64 limit = offset + size;
 	int err = -1;
 
 	while (offset < limit) {
diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index 3180ff7e3633b4dff29d167c3d2a7e23367d23fb..258a87bcc4fbfc44c40fb35019b71b0cce0212b7 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -27,6 +27,6 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
 			    int full_paths,
 			    int *cwdlen,
 			    char **cwd);
-int perf_header__read_build_ids(int input, off_t offset, off_t file_size);
+int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
 
 #endif