diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index c1048893f4b6..9177f5c133f0 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -352,7 +352,7 @@ static int __crash_shrink_memory(struct resource *old_res,
 		old_res->start = 0;
 		old_res->end   = 0;
 	} else {
-		crashk_res.end = ram_res->start - 1;
+		old_res->end = ram_res->start - 1;
 	}
 
 	crash_free_reserved_phys_range(ram_res->start, ram_res->end);