diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 2d50a9f8b2..1148458616 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -2213,7 +2213,7 @@
 // then the BLUE led is on. Otherwise the RED led is on. (1C hysteresis)
 //#define TEMP_STAT_LEDS
 
-// SkeinForge sends the wrong arc g-codes when using Arc Point as fillet procedure
+// SkeinForge sends the wrong arc G-codes when using Arc Point as fillet procedure
 //#define SF_ARC_FIX
 
 // Support for the BariCUDA Paste Extruder
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index e102cb4113..b587495058 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -1186,7 +1186,7 @@
   #if ENABLED(SDCARD_SORT_ALPHA)
     #define SDSORT_LIMIT       40     // Maximum number of sorted items (10-256). Costs 27 bytes each.
     #define FOLDER_SORTING     -1     // -1=above  0=none  1=below
-    #define SDSORT_GCODE       false  // Allow turning sorting on/off with LCD and M34 g-code.
+    #define SDSORT_GCODE       false  // Allow turning sorting on/off with LCD and M34 G-code.
     #define SDSORT_USES_RAM    false  // Pre-allocate a static array for faster pre-sorting.
     #define SDSORT_USES_STACK  false  // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
     #define SDSORT_CACHE_NAMES false  // Keep sorted items in RAM longer for speedy performance. Most expensive option.
@@ -2424,7 +2424,7 @@
    * for error conditions like overtemperature and short to ground.
    * To manage over-temp Marlin can decrease the driver current until the error condition clears.
    * Other detected conditions can be used to stop the current print.
-   * Relevant g-codes:
+   * Relevant G-codes:
    * M906 - Set or get motor current in milliamps using axis codes X, Y, Z, E. Report values if no axis codes given.
    * M911 - Report stepper driver overtemperature pre-warn condition.
    * M912 - Clear stepper driver overtemperature pre-warn condition flag.
@@ -2715,7 +2715,7 @@
    * Monitor L6470 drivers for error conditions like over temperature and over current.
    * In the case of over temperature Marlin can decrease the drive until the error condition clears.
    * Other detected conditions can be used to stop the current print.
-   * Relevant g-codes:
+   * Relevant G-codes:
    * M906 - I1/2/3/4/5  Set or get motor drive level using axis codes X, Y, Z, E. Report values if no axis codes given.
    *         I not present or I0 or I1 - X, Y, Z or E0
    *         I2 - X2, Y2, Z2 or E1
@@ -3029,7 +3029,7 @@
 //#define POWER_MONITOR_VOLTAGE   // Monitor the system voltage
 #if EITHER(POWER_MONITOR_CURRENT, POWER_MONITOR_VOLTAGE)
   #define POWER_MONITOR_VOLTS_PER_AMP   0.05000   // Input voltage to the MCU analog pin per amp  - DO NOT apply more than ADC_VREF!
-  #define POWER_MONITOR_CURRENT_OFFSET -1         // Offset value for current sensors with linear function output  
+  #define POWER_MONITOR_CURRENT_OFFSET -1         // Offset value for current sensors with linear function output
   #define POWER_MONITOR_VOLTS_PER_VOLT  0.11786   // Input voltage to the MCU analog pin per volt - DO NOT apply more than ADC_VREF!
   #define POWER_MONITOR_FIXED_VOLTAGE   13.6      // Voltage for a current sensor with no voltage sensor (for power display)
 #endif