diff --git a/Marlin/src/HAL/HAL_AVR/inc/SanityCheck.h b/Marlin/src/HAL/HAL_AVR/inc/SanityCheck.h
index 93fadf20a5..a6bff05ce7 100644
--- a/Marlin/src/HAL/HAL_AVR/inc/SanityCheck.h
+++ b/Marlin/src/HAL/HAL_AVR/inc/SanityCheck.h
@@ -39,7 +39,7 @@
  * Checks for FAST PWM
  */
 #if ENABLED(FAST_PWM_FAN) && (ENABLED(USE_OCR2A_AS_TOP) && defined(TCCR2))
-    #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
+  #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
 #endif
 
 /**
diff --git a/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h b/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
index 0f27d8bf35..9880722670 100644
--- a/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
+++ b/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
@@ -36,7 +36,7 @@
 #endif
 
 #if ENABLED(SDIO_SUPPORT)
-  #error "SDIO_SUPPORT is not supported."
+  #error "SDIO_SUPPORT is not supported on SAMD51."
 #endif
 
 #if ENABLED(FAST_PWM_FAN)