diff --git a/src/switch_ivr_async.c b/src/switch_ivr_async.c
index 929daf8ec5..5c1ff19c0d 100644
--- a/src/switch_ivr_async.c
+++ b/src/switch_ivr_async.c
@@ -503,7 +503,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_eavesdrop_session(switch_core_session
 		switch_channel_t *tchannel = switch_core_session_get_channel(tsession);
 		switch_frame_t *read_frame, write_frame = { 0 };
 		switch_codec_t codec = {0};
-		int16_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
+		int16_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE/2];
 		switch_codec_t *tread_codec = switch_core_session_get_read_codec(tsession);
 		uint32_t tlen = tread_codec->implementation->bytes_per_frame;