diff --git a/src/MISC/fix_imd.cpp b/src/MISC/fix_imd.cpp
index 6efc16afeb..13a451cf6c 100644
--- a/src/MISC/fix_imd.cpp
+++ b/src/MISC/fix_imd.cpp
@@ -1621,7 +1621,7 @@ void FixIMD::handle_output_v3() {
     }
   }
 
-  int ntotal, nmax, nme=0;
+  int ntotal, nme=0;
   for (int i=0; i < nlocal; ++i)
     if (mask[i] & groupbit) ++nme;