diff --git a/include/fluidsynth/event.h b/include/fluidsynth/event.h
index 3d7a1f7ec..8f5269d2c 100644
--- a/include/fluidsynth/event.h
+++ b/include/fluidsynth/event.h
@@ -111,7 +111,7 @@ FLUIDSYNTH_API void fluid_event_system_reset(fluid_event_t *evt);
 
 
 /* Only for removing events */
-FLUIDSYNTH_API void fluid_event_any_control_change(fluid_event_t *evt, int channel);
+FLUID_DEPRECATED FLUIDSYNTH_API void fluid_event_any_control_change(fluid_event_t *evt, int channel);
 
 /* Only when unregistering clients */
 FLUIDSYNTH_API void fluid_event_unregistering(fluid_event_t *evt);
diff --git a/src/synth/fluid_event.c b/src/synth/fluid_event.c
index d7962eac9..06e842356 100644
--- a/src/synth/fluid_event.c
+++ b/src/synth/fluid_event.c
@@ -252,6 +252,7 @@ fluid_event_program_select(fluid_event_t *evt, int channel,
  * Set a sequencer event to be an any control change event (for internal use).
  * @param evt Sequencer event structure
  * @param channel MIDI channel number
+ * @deprecated This function has been deprecated. It was only meant for internal usage, it should have never been made public. It will be removed in fluidsynth 2.2.0.
  */
 void
 fluid_event_any_control_change(fluid_event_t *evt, int channel)