diff --git a/src/rvoice/fluid_chorus.c b/src/rvoice/fluid_chorus.c
index fbff82f7..053ceac1 100644
--- a/src/rvoice/fluid_chorus.c
+++ b/src/rvoice/fluid_chorus.c
@@ -247,8 +247,8 @@ fluid_chorus_reset(fluid_chorus_t* chorus)
  * @param type Chorus waveform type (#fluid_chorus_mod)
  */
 void
-fluid_chorus_set(fluid_chorus_t* chorus, int set, int nr, float level,
-                 float speed, float depth_ms, int type)
+fluid_chorus_set(fluid_chorus_t* chorus, int set, int nr, fluid_real_t level,
+                 fluid_real_t speed, fluid_real_t depth_ms, int type)
 {
   int modulation_depth_samples;
   int i;
diff --git a/src/rvoice/fluid_chorus.h b/src/rvoice/fluid_chorus.h
index c446f909..57641e06 100644
--- a/src/rvoice/fluid_chorus.h
+++ b/src/rvoice/fluid_chorus.h
@@ -52,8 +52,8 @@ void delete_fluid_chorus(fluid_chorus_t* chorus);
 int fluid_chorus_init(fluid_chorus_t* chorus);
 void fluid_chorus_reset(fluid_chorus_t* chorus);
 
-void fluid_chorus_set(fluid_chorus_t* chorus, int set, int nr, float level,
-                      float speed, float depth_ms, int type);
+void fluid_chorus_set(fluid_chorus_t* chorus, int set, int nr, fluid_real_t level,
+                      fluid_real_t speed, fluid_real_t depth_ms, int type);
 
 void fluid_chorus_processmix(fluid_chorus_t* chorus, fluid_real_t *in,
 			    fluid_real_t *left_out, fluid_real_t *right_out);
diff --git a/src/rvoice/fluid_rev.c b/src/rvoice/fluid_rev.c
index 6b980174..5dc0b03a 100644
--- a/src/rvoice/fluid_rev.c
+++ b/src/rvoice/fluid_rev.c
@@ -475,8 +475,8 @@ fluid_revmodel_update(fluid_revmodel_t* rev)
  * @param level Reverb level
  */
 void
-fluid_revmodel_set(fluid_revmodel_t* rev, int set, float roomsize,
-                   float damping, float width, float level)
+fluid_revmodel_set(fluid_revmodel_t* rev, int set, fluid_real_t roomsize,
+                   fluid_real_t damping, fluid_real_t width, fluid_real_t level)
 {
   if (set & FLUID_REVMODEL_SET_ROOMSIZE)
   {
diff --git a/src/rvoice/fluid_rev.h b/src/rvoice/fluid_rev.h
index 120fe880..3b4c3b4c 100644
--- a/src/rvoice/fluid_rev.h
+++ b/src/rvoice/fluid_rev.h
@@ -68,8 +68,8 @@ void fluid_revmodel_processreplace(fluid_revmodel_t* rev, fluid_real_t *in,
 
 void fluid_revmodel_reset(fluid_revmodel_t* rev);
 
-void fluid_revmodel_set(fluid_revmodel_t* rev, int set, float roomsize,
-                        float damping, float width, float level);
+void fluid_revmodel_set(fluid_revmodel_t* rev, int set, fluid_real_t roomsize,
+                        fluid_real_t damping, fluid_real_t width, fluid_real_t level);
 
 void fluid_revmodel_samplerate_change(fluid_revmodel_t* rev, fluid_real_t sample_rate);
 
diff --git a/src/rvoice/fluid_rvoice_mixer.c b/src/rvoice/fluid_rvoice_mixer.c
index dcceba51..52c8e7aa 100644
--- a/src/rvoice/fluid_rvoice_mixer.c
+++ b/src/rvoice/fluid_rvoice_mixer.c
@@ -676,14 +676,14 @@ void fluid_rvoice_mixer_set_mix_fx(fluid_rvoice_mixer_t* mixer, int on)
 }
 
 void fluid_rvoice_mixer_set_chorus_params(fluid_rvoice_mixer_t* mixer, int set, 
-				         int nr, double level, double speed, 
-				         double depth_ms, int type)
+				         int nr, fluid_real_t level, fluid_real_t speed, 
+				         fluid_real_t depth_ms, int type)
 {
   fluid_chorus_set(mixer->fx.chorus, set, nr, level, speed, depth_ms, type);
 }
 void fluid_rvoice_mixer_set_reverb_params(fluid_rvoice_mixer_t* mixer, int set, 
-					 double roomsize, double damping, 
-					 double width, double level)
+					 fluid_real_t roomsize, fluid_real_t damping, 
+					 fluid_real_t width, fluid_real_t level)
 {
   fluid_revmodel_set(mixer->fx.reverb, set, roomsize, damping, width, level); 
 }
diff --git a/src/rvoice/fluid_rvoice_mixer.h b/src/rvoice/fluid_rvoice_mixer.h
index f6c6ba98..2fa3ec26 100644
--- a/src/rvoice/fluid_rvoice_mixer.h
+++ b/src/rvoice/fluid_rvoice_mixer.h
@@ -58,11 +58,11 @@ void fluid_rvoice_mixer_set_mix_fx(fluid_rvoice_mixer_t* mixer, int on);
 int fluid_rvoice_mixer_set_polyphony(fluid_rvoice_mixer_t* handler, int value);
 int fluid_rvoice_mixer_add_voice(fluid_rvoice_mixer_t* mixer, fluid_rvoice_t* voice);
 void fluid_rvoice_mixer_set_chorus_params(fluid_rvoice_mixer_t* mixer, int set, 
-				         int nr, double level, double speed, 
-				         double depth_ms, int type);
+				         int nr, fluid_real_t level, fluid_real_t speed, 
+				         fluid_real_t depth_ms, int type);
 void fluid_rvoice_mixer_set_reverb_params(fluid_rvoice_mixer_t* mixer, int set, 
-					 double roomsize, double damping, 
-					 double width, double level);
+					 fluid_real_t roomsize, fluid_real_t damping, 
+					 fluid_real_t width, fluid_real_t level);
 void fluid_rvoice_mixer_reset_fx(fluid_rvoice_mixer_t* mixer);
 void fluid_rvoice_mixer_reset_reverb(fluid_rvoice_mixer_t* mixer);
 void fluid_rvoice_mixer_reset_chorus(fluid_rvoice_mixer_t* mixer);