5 files changed, 5 insertions, 17 deletions
diff --git a/keyboards/preonic/config.h b/keyboards/preonic/config.h
index dfd0a8439a..8f72de9094 100644
--- a/keyboards/preonic/config.h
+++ b/keyboards/preonic/config.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
@@ -78,5 +77,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
-
-#endif
diff --git a/keyboards/preonic/keymaps/badger/keymap.c b/keyboards/preonic/keymaps/badger/keymap.c
index 495cf28c45..761beb861f 100644
--- a/keyboards/preonic/keymaps/badger/keymap.c
+++ b/keyboards/preonic/keymaps/badger/keymap.c
@@ -14,7 +14,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 // if not REV3, just compile the default keymaps
-#ifndef REV3_CONFIG_H
+#ifndef KEYBOARD_preonic_rev3
 #include "../default/keymap.c"
 #else
 
diff --git a/keyboards/preonic/rev1/config.h b/keyboards/preonic/rev1/config.h
index 76b6465909..a1091b10ed 100644
--- a/keyboards/preonic/rev1/config.h
+++ b/keyboards/preonic/rev1/config.h
@@ -15,12 +15,9 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef REV1_CONFIG_H
-#define REV1_CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
 #define DEVICE_VER      0x0001
 #define PRODUCT_ID      0x67F3
-
-#endif
-\ No newline at end of file
diff --git a/keyboards/preonic/rev2/config.h b/keyboards/preonic/rev2/config.h
index 29fc091848..a62fed4850 100644
--- a/keyboards/preonic/rev2/config.h
+++ b/keyboards/preonic/rev2/config.h
@@ -15,12 +15,9 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef REV2_CONFIG_H
-#define REV2_CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
 #define DEVICE_VER      0x0002
 #define PRODUCT_ID      0x67F3
-
-#endif
-\ No newline at end of file
diff --git a/keyboards/preonic/rev3/config.h b/keyboards/preonic/rev3/config.h
index 420e7e5413..f2c4b3c3d8 100644
--- a/keyboards/preonic/rev3/config.h
+++ b/keyboards/preonic/rev3/config.h
@@ -15,8 +15,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef REV3_CONFIG_H
-#define REV3_CONFIG_H
+#pragma once
 
 /* USB Device descriptor parameter */
 #define DEVICE_VER 0x0003
@@ -107,5 +106,3 @@
 #define WS2812_PWM_PAL_MODE 1
 #define WS2812_DMA_STREAM STM32_DMA1_STREAM2
 #define WS2812_DMA_CHANNEL 2
-
-#endif