diff --git a/doc/CHANGES b/doc/CHANGES
index b100b64..41f0408 100644
--- a/doc/CHANGES
+++ b/doc/CHANGES
@@ -14574,7 +14574,7 @@ abcmidi: new feature
 %%MIDI pitchbendrange semi
 maps the pitchwheel 0 to 16383 to semi semitones. By default semi
 is set to 2. If you change it to 4, then the pitchwheel maps into
-4 semitones. This effects all microtones in the active channel
++/-4 semitones. This effects all microtones in the active channel
 when semi is not 2. %%MIDI temperament commands may not work
 correctly. Here is an example.
 
diff --git a/genmidi.c b/genmidi.c
index 11e2986..eb4f931 100644
--- a/genmidi.c
+++ b/genmidi.c
@@ -1444,7 +1444,7 @@ write_event(control_change, channel, data, 2);
 
 /* [SS] 2022-01-27 */
 static void midiPitchBendRange (int semis) {
-/* by default the pitch whell maps 0 to 16383 to a range of 2
+/* by default the pitch wheel maps 0 to 16383 to a range of 4
  * semitones. This function uses the RPN control command to
  * expand the range to semis semitones.
  */