diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 98cebb090d..5dc5704a4d 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -293,7 +293,7 @@ static inline int16_t adpcm_ima_oki_expand_nibble(ADPCMChannelStatus *c, int nib
     c->predictor = av_clip_intp2(predictor, 11);
     c->step_index = step_index;
 
-    return c->predictor << 4;
+    return c->predictor * 16;
 }
 
 static inline int16_t adpcm_ct_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)