1 files changed, 11 insertions, 2 deletions

diff --git a/tmk_core/common/mousekey.h b/tmk_core/common/mousekey.h
index 6eede06b4..9338d0af7 100644
--- a/tmk_core/common/mousekey.h
+++ b/tmk_core/common/mousekey.h
@@ -23,8 +23,17 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 /* max value on report descriptor */
-#define MOUSEKEY_MOVE_MAX       127
-#define MOUSEKEY_WHEEL_MAX      127
+#ifndef MOUSEKEY_MOVE_MAX
+    #define MOUSEKEY_MOVE_MAX       127
+#elif MOUSEKEY_MOVE_MAX > 127
+    #error MOUSEKEY_MOVE_MAX needs to be smaller than 127
+#endif
+
+#ifndef MOUSEKEY_WHEEL_MAX
+    #define MOUSEKEY_WHEEL_MAX      127
+#elif MOUSEKEY_WHEEL_MAX > 127
+    #error MOUSEKEY_WHEEL_MAX needs to be smaller than 127
+#endif
 
 #ifndef MOUSEKEY_MOVE_DELTA
 #define MOUSEKEY_MOVE_DELTA     5