diff --git a/settings.h b/settings.h
index d353cb9..53edf8b 100644
--- a/settings.h
+++ b/settings.h
@@ -1072,8 +1072,7 @@ bool settings_read_coord_data(coord_system_id_t id, float (*coord_data)[N_AXIS])
 bool settings_override_acceleration (uint8_t axis, float acceleration);
 
 #if ENABLE_ACCELERATION_PROFILES
-extern uint8_t ActiveAccelProfile;
-float LookupProfile (uint8_t Profile);
+float lookupprofile (uint8_t profile);
 #endif
 
 void settings_register (setting_details_t *details);