diff --git a/src/map/modify.c b/src/map/modify.c
index 2b071e5..7c77a3e 100644
--- a/src/map/modify.c
+++ b/src/map/modify.c
@@ -11,7 +11,7 @@ bool libcdsb_map_update(map_t* x, vtype_variable key, vtype_variable value, void
     if (!mnode_is_empty(n = x->root)) {
         do {
             p   = n;
-            cmp = vtype_compare(key.pointer, key.type, vnode_peek(&n->key, key.type), key.type);
+            cmp = vtype_compare(key.pointer, key.type, vnode_peek(&n->key, x->type), x->type);
 
             if (cmp == 0) {
                 if (callback) callback(libcdsb_variable_build(vnode_peek(&n->key,   x->type), x->type),
@@ -58,7 +58,7 @@ bool libcdsb_map_inject(map_t* x, vtype_variable key, vtype_variable value, void
     if (!mnode_is_empty(n)) {
         do {
             p   = n;
-            cmp = vtype_compare(key.pointer, key.type, vnode_peek(&n->key, key.type), key.type);
+            cmp = vtype_compare(key.pointer, key.type, vnode_peek(&n->key, x->type), x->type);
 
             if (cmp == 0) {
                 if (callback) callback(libcdsb_variable_build(vnode_peek(&n->key,   x->type), x->type),
diff --git a/src/set/modify.c b/src/set/modify.c
index a37e4f8..9f0abc3 100644
--- a/src/set/modify.c
+++ b/src/set/modify.c
@@ -13,7 +13,7 @@ bool libcdsb_vset_insert(set_t* x, vtype_variable value) {
     if (!rbnode_is_empty(n = x->root)) {
         do {
             p   = n;
-            cmp = vtype_compare(value.pointer, value.type, vnode_peek(&n->value, value.type), value.type);
+            cmp = vtype_compare(value.pointer, value.type, vnode_peek(&n->value, x->type), x->type);
 
             if (cmp == 0) return false;
 
@@ -50,7 +50,7 @@ bool libcdsb_vset_attach(set_t* x, vtype_variable value) {
     if (!rbnode_is_empty(n)) {
         do {
             p   = n;
-            cmp = vtype_compare(value.pointer, value.type, vnode_peek(&n->value, value.type), value.type);
+            cmp = vtype_compare(value.pointer, value.type, vnode_peek(&n->value, x->type), x->type);
 
             if (cmp == 0) {
                 vnode_free(&vn, value.type);