1 files changed, 1 insertions, 1 deletions
diff --git a/src/Comm.c b/src/Comm.c
index 68e8fa7..792882e 100644
--- a/src/Comm.c
+++ b/src/Comm.c
@@ -164,7 +164,7 @@ int PUGH_SyncGroupsByDirI(const cGH *GH,
 #endif
 
     first_var = CCTK_FirstVarIndexI (groups[group]);
-    if (first_var > 0 && PUGH_SyncGArrayGroup (pughGH, first_var) == 0)
+    if (first_var >= 0 && PUGH_SyncGArrayGroup (pughGH, first_var) == 0)
     {
       retval++;
     }