diff --git a/src/kernel/io/nemovar.c b/src/kernel/io/nemovar.c
index 6a2a4986c..85ef2b7fd 100644
--- a/src/kernel/io/nemovar.c
+++ b/src/kernel/io/nemovar.c
@@ -32,6 +32,8 @@ void nemo_main()
   if (nemovar == NULL) error("$NEMOVAR was not set");
   dprintf(1,"nemovar: %s\n", nemovar);
 
+  if (hasComment)
+    warning("comment %s not yet used", comment);
 
   // bug or feature, nemovar currently needs to exist
   if (!fexist(nemovar)) {
diff --git a/src/nbody/reduc/snapcmp.c b/src/nbody/reduc/snapcmp.c
index 98758a021..e6ce383f1 100644
--- a/src/nbody/reduc/snapcmp.c
+++ b/src/nbody/reduc/snapcmp.c
@@ -136,6 +136,8 @@ void nemo_main()
 	if (dt > small_dt)
 	  warning("times = %f, %f are different (%g)", tsnap1, tsnap2, dt);
       }
+      dprintf(0,"time1,2: %g %g   %g %g nout %d\n",time1,time2,tsnap1,tsnap2,nout);
+      
       if (!Qtime0 && time1==0 && time2==0) continue;
       if (!Qtime0 && nout==0) continue;      
       if (bits1 != bits2)
@@ -151,7 +153,7 @@ void nemo_main()
       snapcmpplot(result, btab1, nbody1, tsnap1);
 #endif
       nout++;
-    }
+    } // for(;;)
 }
 
 local real *snapcmp(Body *btab1, Body *btab2, int nbody, real tsnap)
diff --git a/src/scripts/mknemo.d/gcc b/src/scripts/mknemo.d/gcc
index ad8eb6631..03c2d6b2f 100755
--- a/src/scripts/mknemo.d/gcc
+++ b/src/scripts/mknemo.d/gcc
@@ -1,4 +1,4 @@
-#! /usr/bin/bash
+#! /usr/bin/env bash
 #
 # sudo apt install build-essential
 # sudo apt install libmpfr-dev libgmp3-dev libmpc-dev -y