diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
index ab41a5a4d934..6c6101bc86d3 100644
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -1146,7 +1146,7 @@ linprocfs_doprocmaps(PFS_FILL_ARGS)
 	vm_map_entry_t entry, tmp_entry;
 	vm_object_t obj, tobj, lobj;
 	vm_offset_t e_start, e_end;
-	vm_ooffset_t off = 0;
+	vm_ooffset_t off;
 	vm_prot_t e_prot;
 	unsigned int last_timestamp;
 	char *name = "", *freename = NULL;
@@ -1196,7 +1196,7 @@ linprocfs_doprocmaps(PFS_FILL_ARGS)
 		vm_map_unlock_read(map);
 		ino = 0;
 		if (lobj) {
-			off = IDX_TO_OFF(lobj->size);
+			off = entry->offset;
 			vp = vm_object_vnode(lobj);
 			if (vp != NULL)
 				vref(vp);
@@ -1220,6 +1220,7 @@ linprocfs_doprocmaps(PFS_FILL_ARGS)
 			}
 		} else {
 			flags = 0;
+			off = 0;
 			ref_count = 0;
 			shadow_count = 0;
 		}