diff --git a/src/opt/rar/rewireMiaig.h b/src/opt/rar/rewireMiaig.h
index 8e2664653..198eca738 100644
--- a/src/opt/rar/rewireMiaig.h
+++ b/src/opt/rar/rewireMiaig.h
@@ -441,7 +441,7 @@ inline void Miaig::release(void) {
             if (_data->pRequire) free(_data->pRequire);
             if (_data->pTable) free(_data->pTable);
             if (_data->pNtkMapped) Vi_Free(_data->pNtkMapped);
-            delete _data;
+            free(_data);
         }
     }
 
@@ -612,4 +612,4 @@ inline void Miaig::attachTiming(vi *vCiArrs, vi *vCoReqs) {
 ABC_NAMESPACE_CXX_HEADER_END
 #endif // RW_ABC
 
-#endif // REWIRE_MIAIG_H
\ No newline at end of file
+#endif // REWIRE_MIAIG_H