fix typo: substract -> subtract

1 files changed, 1 insertions, 1 deletions

diff --git a/src/encoder/encodermp3.cpp b/src/encoder/encodermp3.cpp
index cb69db74bf..ff573d6c38 100644
--- a/src/encoder/encodermp3.cpp
+++ b/src/encoder/encodermp3.cpp
@@ -32,7 +32,7 @@ const int EncoderMp3::MONO_BITRATE_THRESHOLD = 100;
 // The threshold of quality (VBR) at which the encoder
 // with switch to mono encoding. Values from 0 to 6 encode at 44Khz
 const int EncoderMp3::MONO_VBR_THRESHOLD = 8;
-// Quality offset to substract to the quality value when
+// Quality offset to subtract to the quality value when
 // switching to mono encoding.
 const int EncoderMp3::MONO_VBR_OFFSET = 4;