1 files changed, 4 insertions, 4 deletions

diff --git a/param.ccl b/param.ccl
index c93a24e..40d2969 100644
--- a/param.ccl
+++ b/param.ccl
@@ -42,17 +42,17 @@ INT global_nsize "The size of the grid in each spatial direction"
 
 INT ghost_size_x "The width of the ghost zone in the x direction"
 {
-    1:*     :: "Must be a positive integer"
+    0:*     :: "Must be a positive integer"
 } 1
 
 INT ghost_size_y "The width of the ghost zone in the y direction"
 {
-    1:*     :: "Must be a positive integer"
+    0:*     :: "Must be a positive integer"
 } 1
 
 INT ghost_size_z "The width of the ghost zone in the z direction"
 {
-    1:*     :: "Must be a positive integer"
+    0:*     :: "Must be a positive integer"
 } 1
 
 INT ghost_size "The width of the ghost zone in each direction"
@@ -208,4 +208,4 @@ STRING partition_3d_z "Tells how to partition on direction z"
 
 LOGICAL storage_verbose "Report on memory assignment"
 {
-} "no"
\ No newline at end of file
+} "no"