diff --git a/global.h b/global.h
index e02f41d..bc7bce9 100644
--- a/global.h
+++ b/global.h
@@ -61,11 +61,28 @@
 /** @} */
 
 /** @brief switch on board LED */
-void led_on(void);
+inline void led_on(void)
+{
+#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
+	gpio_clear(LED_PORT, LED_PIN);
+#elif defined(MAPLE_MINI)
+	gpio_set(LED_PORT, LED_PIN);
+#endif
+}
 /** @brief switch off board LED */
-void led_off(void);
+inline void led_off(void)
+{
+#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
+	gpio_set(LED_PORT, LED_PIN);
+#elif defined(MAPLE_MINI)
+	gpio_clear(LED_PORT, LED_PIN);
+#endif
+}
 /** @brief toggle board LED */
-void led_toggle(void);
+inline void led_toggle(void)
+{
+	gpio_toggle(LED_PORT, LED_PIN);
+}
 /** @brief default printf output */
 int _write(int file, char *ptr, int len);
 /** @brief get binary representation of a number
diff --git a/main.c b/main.c
index b9ce764..2ebbe02 100644
--- a/main.c
+++ b/main.c
@@ -129,29 +129,6 @@ int _write(int file, char *ptr, int len)
 	return -1;
 }
 
-void led_on(void)
-{
-#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
-	gpio_clear(LED_PORT, LED_PIN);
-#elif defined(MAPLE_MINI)
-	gpio_set(LED_PORT, LED_PIN);
-#endif
-}
-
-void led_off(void)
-{
-#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
-	gpio_set(LED_PORT, LED_PIN);
-#elif defined(MAPLE_MINI)
-	gpio_clear(LED_PORT, LED_PIN);
-#endif
-}
-
-void led_toggle(void)
-{
-	gpio_toggle(LED_PORT, LED_PIN);
-}
-
 /** @brief switch off all clock LEDs
  *  @note LEDs need to be set separately
  */