diff --git a/bin/ngcp-api-ping b/bin/ngcp-api-ping
index 852ea76..43041fd 100755
--- a/bin/ngcp-api-ping
+++ b/bin/ngcp-api-ping
@@ -42,22 +42,17 @@ sub main {
     my $uri = '/api/domains/';
     $client->set_verbose($opts->{verbose});
     my $res = $client->request("GET", $uri);
-    my $rc = 0;
+
     if (defined $res->as_hash->{total_count}) {
         print "API is up\n";
+        return 0;
     } else {
         print "API is down\n";
-        $rc = 1;
+        return 1;
     }
-
-    exit $rc;
-
-    return;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-create-customer b/bin/ngcp-create-customer
index d8c476d..00c4890 100755
--- a/bin/ngcp-create-customer
+++ b/bin/ngcp-create-customer
@@ -53,14 +53,10 @@ sub main {
     my $res = $client->request("POST", $uri, \%data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-create-domain b/bin/ngcp-create-domain
index 31e62f2..cf5b837 100755
--- a/bin/ngcp-create-domain
+++ b/bin/ngcp-create-domain
@@ -60,14 +60,10 @@ sub main {
     my $res = $client->request("POST", $uri, \%data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-create-subscriber b/bin/ngcp-create-subscriber
index 437f96b..7cb1200 100755
--- a/bin/ngcp-create-subscriber
+++ b/bin/ngcp-create-subscriber
@@ -71,14 +71,10 @@ sub main {
     my $res = $client->request("POST", $uri, \%data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-credit-warning b/bin/ngcp-credit-warning
index 9b5b19a..2d27bfc 100755
--- a/bin/ngcp-credit-warning
+++ b/bin/ngcp-credit-warning
@@ -168,12 +168,10 @@ sub main {
             print $EVAL_ERROR if $EVAL_ERROR;
         }
     }
-    return;
+    return 0;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-delete-domain b/bin/ngcp-delete-domain
index d8e1c6e..df19d8d 100755
--- a/bin/ngcp-delete-domain
+++ b/bin/ngcp-delete-domain
@@ -67,14 +67,10 @@ sub main {
     my $res = $client->request("DELETE", $uri, \%data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-get-customer b/bin/ngcp-get-customer
index 76bcc05..a80b993 100755
--- a/bin/ngcp-get-customer
+++ b/bin/ngcp-get-customer
@@ -48,14 +48,10 @@ sub main {
     $res->is_success ? print $res->decoded_content."\n"
                      : print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-sound-set b/bin/ngcp-sound-set
index 39c1551..f8eacd1 100755
--- a/bin/ngcp-sound-set
+++ b/bin/ngcp-sound-set
@@ -48,14 +48,10 @@ sub main {
     $res->is_success ? print $res->content."\n"
                      : print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-terminate-customer b/bin/ngcp-terminate-customer
index 614bb54..f1a0958 100755
--- a/bin/ngcp-terminate-customer
+++ b/bin/ngcp-terminate-customer
@@ -49,14 +49,10 @@ sub main {
     my $res = $client->request("PATCH", $uri, $data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__
 
diff --git a/bin/ngcp-terminate-subscriber b/bin/ngcp-terminate-subscriber
index a924ecd..577c209 100755
--- a/bin/ngcp-terminate-subscriber
+++ b/bin/ngcp-terminate-subscriber
@@ -65,14 +65,10 @@ sub main {
     my $res = $client->request("PATCH", $uri, $data);
     print $res->result."\n";
 
-    exit !$res->is_success;
-
-    return;
+    return !$res->is_success;
 }
 
-main();
-
-exit 0;
+exit main();
 
 __END__