diff --git a/lib_enc/enc_pit_exc_fx.c b/lib_enc/enc_pit_exc_fx.c
index 9e3b817b1042504d9eb995245224954bd5b992a1..e0d4f50163ee4f433de12fe5b2f507ebc8ec7eb8 100644
--- a/lib_enc/enc_pit_exc_fx.c
+++ b/lib_enc/enc_pit_exc_fx.c
@@ -579,6 +579,7 @@ void enc_pit_exc_ivas_fx(
     Word16 use_fcb;
     Word32 gc_mem[NB_SUBFR - 1]; /* gain_code from previous subframes */
     Word16 gp_mem[NB_SUBFR - 1]; /* gain_pitch from previous subframes*/
+    Word16 h1_q15[PIT_EXC_L_SUBFR + ( M + 1 )];
     SP_MUS_CLAS_HANDLE hSpMusClas = st_fx->hSpMusClas;
     BSTR_ENC_HANDLE hBstr = st_fx->hBstr;
     GSC_ENC_HANDLE hGSCEnc = st_fx->hGSCEnc;
@@ -768,8 +769,9 @@ void enc_pit_exc_ivas_fx(
          * Codebook target computation
          * (No LP filtering of the adaptive excitation)
          *-----------------------------------------------------------------*/
+        Copy_Scale_sig( h1, h1_q15, L_subfr, 1 ); // Q14 -> Q15
 
-        lp_select = lp_filt_exc_enc_ivas_fx( MODE1, AUDIO, i_subfr, exc, h1,
+        lp_select = lp_filt_exc_enc_ivas_fx( MODE1, AUDIO, i_subfr, exc, h1_q15,
                                              xn, y1, xn2, L_subfr, st_fx->L_frame, g_corr, clip_gain, &gain_pit, &lp_flag ); /* Q0 */
 
         IF( EQ_16( lp_flag, NORMAL_OPERATION ) )