diff --git a/src/serial/gitter_mgb.cc b/src/serial/gitter_mgb.cc
index def3bc8d616b8f6a35972144f27967828cc46598..c0053ca9cc42e4ff2abfba3c2f2d2d7e2b7bce1e 100644
--- a/src/serial/gitter_mgb.cc
+++ b/src/serial/gitter_mgb.cc
@@ -526,6 +526,7 @@ void MacroGridBuilder :: generateRawHexaImage (istream & in, ostream & os) {
   }
   delete [] vnum ;
   delete [] coord ;
+  delete [] pervec ;
   delete [] bvec ;
   delete [] pident ;
   if (debugOption (4))