diff --git a/Changelog.md b/Changelog.md
index 71fe0bc8..5ec4a6ae 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,6 @@
+**V1.11.6 - Updates**
+- add #ifdef for ALTITUDE_STEPS_PER_REV and ALTITUDE_STEPS_PER_ARC_MINUTE
+
 **V1.11.5 - Updates**
 - Corrected Longitude parsing to account for sign
 - Corrected Longitude output to provide sign
diff --git a/Configuration_adv.hpp b/Configuration_adv.hpp
index a0c93ba3..39e3ef16 100644
--- a/Configuration_adv.hpp
+++ b/Configuration_adv.hpp
@@ -353,11 +353,15 @@
         #define ALT_WORMGEAR_RATIO (40.0f)
     #endif
 
-    #define ALTITUDE_STEPS_PER_REV                                                                                                         \
-        (ALT_CORRECTION_FACTOR * (ALT_CIRCUMFERENCE / (ALT_PULLEY_TEETH * GT2_BELT_PITCH)) * ALT_STEPPER_SPR * ALT_MICROSTEPPING           \
-         * ALT_WORMGEAR_RATIO)                                                      // Actually u-steps/rev
-    #define ALTITUDE_STEPS_PER_ARC_MINUTE (ALTITUDE_STEPS_PER_REV / (360 * 60.0f))  // Used to determine move distance in steps
-
+    #ifndef ALTITUDE_STEPS_PER_REV 
+        #define ALTITUDE_STEPS_PER_REV                                                                                                         \
+            (ALT_CORRECTION_FACTOR * (ALT_CIRCUMFERENCE / (ALT_PULLEY_TEETH * GT2_BELT_PITCH)) * ALT_STEPPER_SPR * ALT_MICROSTEPPING           \
+             * ALT_WORMGEAR_RATIO)                                                      // Actually u-steps/rev
+    #endif
+    #ifndef ALTITUDE_STEPS_PER_ARC_MINUTE
+        #define ALTITUDE_STEPS_PER_ARC_MINUTE (ALTITUDE_STEPS_PER_REV / (360 * 60.0f))  // Used to determine move distance in steps
+    #endif
+    
     // ALT TMC2209 UART settings
     // These settings work only with TMC2209 in UART connection (single wire to TX)
     #if (ALT_DRIVER_TYPE == DRIVER_TYPE_TMC2209_UART)
diff --git a/Version.h b/Version.h
index 5098607f..97f83963 100644
--- a/Version.h
+++ b/Version.h
@@ -3,4 +3,4 @@
 // Also, numbers are interpreted as simple numbers.                        _   __   _
 // So 1.8 is actually 1.08, meaning that 1.12 is a later version than 1.8.  \_(..)_/
 
-#define VERSION "V1.11.5"
+#define VERSION "V1.11.6"