diff --git a/ArduPlane/planner.pde b/ArduPlane/planner.pde
index eccccf8815..4d920f97d7 100644
--- a/ArduPlane/planner.pde
+++ b/ArduPlane/planner.pde
@@ -2,14 +2,14 @@
 
 // These are function definitions so the Menu can be constructed before the functions
 // are defined below. Order matters to the compiler.
-static int8_t	planner_gcs(uint8_t argc, 		const Menu::arg *argv);
+static int8_t   planner_gcs(uint8_t argc,               const Menu::arg *argv);
 
 // Creates a constant array of structs representing menu options
 // and stores them in Flash memory, not RAM.
 // User enters the string in the console to call the functions on the right.
 // See class Menu in AP_Common for implementation details
 static const struct Menu::command planner_menu_commands[] PROGMEM = {
-	{"gcs",		planner_gcs},
+    {"gcs",         planner_gcs},
 };
 
 // A Macro to create the Menu
@@ -18,36 +18,36 @@ MENU(planner_menu, "planner", planner_menu_commands);
 static int8_t
 planner_mode(uint8_t argc, const Menu::arg *argv)
 {
-	Serial.printf_P(PSTR("Planner Mode\n\nThis mode is not intended for manual use\n\n"));
-	planner_menu.run();
+    Serial.printf_P(PSTR("Planner Mode\n\nThis mode is not intended for manual use\n\n"));
+    planner_menu.run();
     return 0;
 }
 static int8_t
 planner_gcs(uint8_t argc, const Menu::arg *argv)
 {
-  gcs0.init(&Serial);
+    gcs0.init(&Serial);
 
 #if USB_MUX_PIN < 0
-  // we don't have gcs3 if we have the USB mux setup
-  gcs3.init(&Serial3);
+    // we don't have gcs3 if we have the USB mux setup
+    gcs3.init(&Serial3);
 #endif
 
-  int16_t loopcount = 0;
-  while (1) {
-    if (millis()-fast_loopTimer_ms > 19) {
-      fast_loopTimer_ms      = millis();
-      
-      gcs_update();
-      
-      read_radio();
-      
-      gcs_data_stream_send();
-      if ((loopcount % 16) == 0) { // 3 hz
-          gcs_send_message(MSG_HEARTBEAT);
-      }
-      loopcount++;
+    int16_t loopcount = 0;
+    while (1) {
+        if (millis()-fast_loopTimer_ms > 19) {
+            fast_loopTimer_ms      = millis();
+
+            gcs_update();
+
+            read_radio();
+
+            gcs_data_stream_send();
+            if ((loopcount % 16) == 0) { // 3 hz
+                gcs_send_message(MSG_HEARTBEAT);
+            }
+            loopcount++;
+        }
     }
-  }
-  return 0;
+    return 0;
 }