diff --git a/cxxmph/mph_map.h b/cxxmph/mph_map.h
index 63095c5..832f7b3 100644
--- a/cxxmph/mph_map.h
+++ b/cxxmph/mph_map.h
@@ -198,7 +198,7 @@ MPH_MAP_METHOD_DECL(void_type, erase)(const key_type& k) {
 }
 
 MPH_MAP_INLINE_METHOD_DECL(const_iterator, find)(const key_type& k) const {
-  auto idx = index2(k);
+  auto idx = index(k);
   typename vector<value_type>::const_iterator vit = values_.begin() + idx;
   if (idx == -1 || vit->first != k) return end();
   return make_solid(&values_, &present_, vit);;