diff --git a/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.cpp b/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.cpp
index ab8c291e..58a9455c 100644
--- a/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.cpp
+++ b/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.cpp
@@ -34,7 +34,10 @@
 namespace kaleidoscope {
 namespace plugin {
 
-uint8_t MouseKeys::speed       = 1;
+#ifndef NDEPRECATED
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+uint8_t MouseKeys::speed = 1;
 uint16_t MouseKeys::speedDelay = 1;
 
 uint8_t MouseKeys::accelSpeed  = 1;
@@ -42,6 +45,8 @@ uint16_t MouseKeys::accelDelay = 64;
 
 uint8_t MouseKeys::wheelSpeed  = 1;
 uint16_t MouseKeys::wheelDelay = 50;
+#pragma GCC diagnostic pop
+#endif
 
 // =============================================================================
 // Configuration functions
diff --git a/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.h b/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.h
index 6483c578..a1f5a1af 100644
--- a/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.h
+++ b/plugins/Kaleidoscope-MouseKeys/src/kaleidoscope/plugin/MouseKeys.h
@@ -23,16 +23,60 @@
 #include "kaleidoscope/key_defs.h"              // for Key
 #include "kaleidoscope/plugin.h"                // for Plugin
 
+// =============================================================================
+// Deprecated MouseKeys code
+#include "kaleidoscope_internal/deprecations.h"  // for DEPRECATED
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_SPEED                                       \
+  "Direct access to the `MouseKeys.speed` variable has been deprecated.\n"        \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_SPEED_DELAY                                 \
+  "Direct access to the `MouseKeys.speedDelay` variable has been deprecated.\n"   \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_ACCEL_SPEED                                 \
+  "Direct access to the `MouseKeys.accelSpeed` variable has been deprecated.\n"   \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_ACCEL_DELAY                                 \
+  "Direct access to the `MouseKeys.accelDelay` variable has been deprecated.\n"   \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_WHEEL_SPEED                                 \
+  "Direct access to the `MouseKeys.wheelSpeed` variable has been deprecated.\n"   \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+#define _DEPRECATED_MESSAGE_MOUSEKEYS_WHEEL_DELAY                                 \
+  "Direct access to the `MouseKeys.wheelDelay` variable has been deprecated.\n"   \
+  "Please refer to the MouseKeys documentation for instructions on how to\n"      \
+  "configure the plugin.\n"
+
+
 namespace kaleidoscope {
 namespace plugin {
 class MouseKeys : public kaleidoscope::Plugin {
  public:
+
+#ifndef NDEPRECATED
+  DEPRECATED(MOUSEKEYS_SPEED)
   static uint8_t speed;
+  DEPRECATED(MOUSEKEYS_SPEED_DELAY)
   static uint16_t speedDelay;
+  DEPRECATED(MOUSEKEYS_ACCEL_SPEED)
   static uint8_t accelSpeed;
+  DEPRECATED(MOUSEKEYS_ACCEL_DELAY)
   static uint16_t accelDelay;
+  DEPRECATED(MOUSEKEYS_WHEEL_SPEED)
   static uint8_t wheelSpeed;
+  DEPRECATED(MOUSEKEYS_WHEEL_DELAY)
   static uint16_t wheelDelay;
+#endif
 
   static void setWarpGridSize(uint8_t grid_size);
   static void setSpeedLimit(uint8_t speed_limit);