diff --git a/src/MC/fix_gcmc.cpp b/src/MC/fix_gcmc.cpp
index b40ce6a1b3342bf185846a37b7caa0ca8c6a0c10..ebfb17390d69f6b687bb50d607f2170aa314b122 100644
--- a/src/MC/fix_gcmc.cpp
+++ b/src/MC/fix_gcmc.cpp
@@ -406,6 +406,8 @@ FixGCMC::~FixGCMC()
 
   memory->destroy(local_gas_list);
   memory->destroy(molcoords);
+  memory->destroy(molq);
+  memory->destroy(molimage);
 
   delete [] idrigid;
   delete [] idshake;