diff --git a/mm/mmap.c b/mm/mmap.c
index 21d4029..73f5e4b 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2282,7 +2282,7 @@
 {
 }
 
-static struct vm_operations_struct special_mapping_vmops = {
+static const struct vm_operations_struct special_mapping_vmops = {
 	.close = special_mapping_close,
 	.fault = special_mapping_fault,
 };