2 files changed, 2 insertions, 2 deletions
diff --git a/include/stc/cstack.h b/include/stc/cstack.h
index f8640ed1..8fb176e1 100644
--- a/include/stc/cstack.h
+++ b/include/stc/cstack.h
@@ -103,7 +103,7 @@ STC_INLINE bool _cx_MEMB(_reserve)(_cx_Self* self, intptr_t n) {
 
 STC_INLINE _cx_value* _cx_MEMB(_append_uninit)(_cx_Self *self, intptr_t n) {
     intptr_t len = self->_len;
-    if (!_cx_MEMB(_reserve)(self, len + n)) return NULL;
+    if (!_cx_MEMB(_reserve)(self, len*3/2 + n)) return NULL;
     self->_len += n;
     return self->data + len;
 }
diff --git a/include/stc/cvec.h b/include/stc/cvec.h
index d08e382f..774f0582 100644
--- a/include/stc/cvec.h
+++ b/include/stc/cvec.h
@@ -316,7 +316,7 @@ _cx_MEMB(_resize)(_cx_Self* self, const intptr_t len, i_key null) {
 STC_DEF _cx_value*
 _cx_MEMB(_push)(_cx_Self* self, i_key value) {
     if (self->_len == self->_cap)
-        if (!_cx_MEMB(_reserve)(self, self->_len*3/2 + 4))
+        if (!_cx_MEMB(_reserve)(self, self->_len*2 + 4))
             return NULL;
     _cx_value *v = self->data + self->_len++;
     *v = value;