diff --git a/driver/st7565.c b/driver/st7565.c
index f9a8645..35f8681 100644
--- a/driver/st7565.c
+++ b/driver/st7565.c
@@ -187,7 +187,7 @@ void ST7565_Init(void)
 }
 
 #ifdef ENABLE_FEAT_F4HWN
-	void ST7565_Contrast(void)
+	void ST7565_ContrastAndInv(void)
 	{
 		SPI_ToggleMasterMode(&SPI0->CR, false);
 		ST7565_WriteByte(ST7565_CMD_SOFTWARE_RESET);   // software reset
diff --git a/driver/st7565.h b/driver/st7565.h
index d29c2bd..b5ec79c 100644
--- a/driver/st7565.h
+++ b/driver/st7565.h
@@ -39,7 +39,7 @@ void ST7565_SelectColumnAndLine(uint8_t Column, uint8_t Line);
 void ST7565_WriteByte(uint8_t Value);
 
 #ifdef ENABLE_FEAT_F4HWN
-	void ST7565_Contrast(void);
+	void ST7565_ContrastAndInv(void);
 #endif
 
 #endif
diff --git a/ui/menu.c b/ui/menu.c
index c284db8..b105768 100644
--- a/ui/menu.c
+++ b/ui/menu.c
@@ -910,12 +910,12 @@ void UI_DisplayMenu(void)
 		case MENU_SET_CTR:
 			sprintf(String, "%d", gSubMenuSelection);
 			gSetting_set_ctr = gSubMenuSelection;
-			ST7565_Contrast();
+			ST7565_ContrastAndInv();
 			break;
 
 		case MENU_SET_INV:
 			strcpy(String, gSubMenu_OFF_ON[gSubMenuSelection]);
-			ST7565_Contrast();
+			ST7565_ContrastAndInv();
 			break;
 #endif
 
diff --git a/ui/welcome.c b/ui/welcome.c
index 8426980..8e939fa 100644
--- a/ui/welcome.c
+++ b/ui/welcome.c
@@ -71,7 +71,7 @@ void UI_DisplayWelcome(void)
 		UI_PrintString(WelcomeString1, 0, 127, 2, 10);
 
 #ifdef ENABLE_FEAT_F4HWN
-		ST7565_Contrast();
+		ST7565_ContrastAndInv();
 		UI_PrintStringSmallNormal(Version, 0, 128, 5);
 		UI_PrintStringSmallNormal(Feat, 0, 128, 6);
 #else