diff --git a/kernel-src/mm/vmm.c b/kernel-src/mm/vmm.c
index 7dfdd13a..461c2dcb 100644
--- a/kernel-src/mm/vmm.c
+++ b/kernel-src/mm/vmm.c
@@ -955,7 +955,7 @@ vmmcontext_t *vmm_fork(vmmcontext_t *oldcontext) {
 
 		memcpy(newrange, range, sizeof(vmmrange_t));
 
-		insertrange(&newcontext->space, newrange);
+		rbtree_insert(&newcontext->space.ranges, &newrange->rbtree_node, rbtree_compare);
 		if (range->flags & VMM_FLAGS_FILE)
 			VOP_HOLD(range->vnode);