diff --git a/app/Kconfig b/app/Kconfig
index fa168242..8817d506 100644
--- a/app/Kconfig
+++ b/app/Kconfig
@@ -269,39 +269,47 @@ config ZMK_RGB_UNDERGLOW_BRT_MIN
 
 config ZMK_RGB_UNDERGLOW_BRT_MAX
 	int "RGB underglow maximum brightness in percent"
-	range 0 100
+	range ZMK_RGB_UNDERGLOW_BRT_MIN 100
 	default 100
 
 config ZMK_RGB_UNDERGLOW_HUE_STEP
-	int "RGB underglow hue step in degrees of 360"
+	int "RGB underglow hue step in degrees"
+	range 0 359
 	default 10
 
 config ZMK_RGB_UNDERGLOW_SAT_STEP
-	int "RGB underglow sturation step in percent"
+	int "RGB underglow saturation step in percent"
+	range 0 100
 	default 10
 
 config ZMK_RGB_UNDERGLOW_BRT_STEP
 	int "RGB underglow brightness step in percent"
+	range 0 100
 	default 10
 
 config ZMK_RGB_UNDERGLOW_HUE_START
-	int "RGB underglow start hue value from 0-359"
+	int "RGB underglow start hue value in degrees"
+	range 0 359
 	default 0
 
 config ZMK_RGB_UNDERGLOW_SAT_START
-	int "RGB underglow start saturations value from 0-100"
+	int "RGB underglow start saturations value in percent"
+	range 0 100
 	default 100
 
 config ZMK_RGB_UNDERGLOW_BRT_START
-	int "RGB underglow start brightness value from 0-100"
-	default 100
+	int "RGB underglow start brightness value in percent"
+	range ZMK_RGB_UNDERGLOW_BRT_MIN ZMK_RGB_UNDERGLOW_BRT_MAX
+	default ZMK_RGB_UNDERGLOW_BRT_MAX
 
 config ZMK_RGB_UNDERGLOW_SPD_START
-	int "RGB underglow start animation speed value from 1-5"
+	int "RGB underglow start animation speed value"
+	range 1 5
 	default 3
 
 config ZMK_RGB_UNDERGLOW_EFF_START
 	int "RGB underglow start effect int value related to the effect enum list"
+	range 0 3
 	default 0
 
 config ZMK_RGB_UNDERGLOW_ON_START