diff --git a/libavcodec/aacpsy.c b/libavcodec/aacpsy.c
index 068fbcd8d0..d1e65f6607 100644
--- a/libavcodec/aacpsy.c
+++ b/libavcodec/aacpsy.c
@@ -717,7 +717,7 @@ static void psy_3gpp_analyze_channel(FFPsyContext *ctx, int channel,
             }
             desired_pe_no_ah = FFMAX(desired_pe - (pe - pe_no_ah), 0.0f);
             if (active_lines > 0.0f)
-                reduction += calc_reduction_3gpp(a, desired_pe_no_ah, pe_no_ah, active_lines);
+                reduction = calc_reduction_3gpp(a, desired_pe_no_ah, pe_no_ah, active_lines);
 
             pe = 0.0f;
             for (w = 0; w < wi->num_windows*16; w += 16) {
diff --git a/tests/fate/aac.mak b/tests/fate/aac.mak
index b36c861f36..97e5d2719a 100644
--- a/tests/fate/aac.mak
+++ b/tests/fate/aac.mak
@@ -91,7 +91,7 @@ fate-aac-aref-encode: CMD = enc_dec_pcm adts wav s16le $(REF) -strict -2 -c:a aa
 fate-aac-aref-encode: CMP = stddev
 fate-aac-aref-encode: REF = ./tests/data/asynth-44100-2.wav
 fate-aac-aref-encode: CMP_SHIFT = -4096
-fate-aac-aref-encode: CMP_TARGET = 1862
+fate-aac-aref-encode: CMP_TARGET = 438
 fate-aac-aref-encode: SIZE_TOLERANCE = 2464
 
 FATE_AAC_ENCODE += fate-aac-ln-encode