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-rw-r--r--kernel/zaptel-base.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/zaptel-base.c b/kernel/zaptel-base.c
index da503eb..2bc0ec5 100644
--- a/kernel/zaptel-base.c
+++ b/kernel/zaptel-base.c
@@ -2930,7 +2930,7 @@ struct zt_tone *zt_mf_tone(const struct zt_chan *chan, char digit, int digitmode
case 'C':
case 'D':
case 'E':
- case 'F':
+ case 'O':
tone_index = ZT_TONE_MFR2_FWD_10 + (digit - 'A');
break;
case 'W':