diff --git a/debian/wit-network-config.postinst b/debian/wit-network-config.postinst
index a345366..8f08802 100755
--- a/debian/wit-network-config.postinst
+++ b/debian/wit-network-config.postinst
@@ -326,8 +326,8 @@ case "$1" in
                 let i+=1
             done
 
-	    [ -z $IPSEC_IPV4_SUBNETS ] && exit 2
-	    [ -z $IPSEC_IPV6_SUBNETS ] && exit 2
+            [ -z $IPSEC_IPV4_SUBNETS ] && exit 2
+            [ -z $IPSEC_IPV6_SUBNETS ] && exit 2
 
      ## STOP compiling frr config