1 files changed, 1 insertions, 1 deletions
diff --git a/dsp.c b/dsp.c
index afcb3fd79..6af5d307f 100755
--- a/dsp.c
+++ b/dsp.c
@@ -718,7 +718,7 @@ static int mf_detect (mf_detect_state_t *s,
 			/* Check for 2nd harmonic */
 			if (goertzel_result(&s->tone_out2nd[best1]) * MF_2ND_HARMONIC > tone_energy[best1]) 
 				sofarsogood = 0;
-			else if (goertzel_result(&s->tone_out2nd[best1]) * MF_2ND_HARMONIC > tone_energy[best2])
+			else if (goertzel_result(&s->tone_out2nd[best2]) * MF_2ND_HARMONIC > tone_energy[best2])
 				sofarsogood = 0;
 		}
 		if (sofarsogood) {