diff --git a/lib_com/basop_util.c b/lib_com/basop_util.c
index 37619f4c1ff2a467c26414eea3a13394a1f4c11b..44182659d1d28799c6fac90d285f65f049b7dc03 100644
--- a/lib_com/basop_util.c
+++ b/lib_com/basop_util.c
@@ -2581,12 +2581,25 @@ Word32 BASOP_Util_Add_Mant32Exp /* o  : normalized result mantissa */
        account all shift operations.
     */
 
+    shift = norm_l( a_m );
+    a_m = L_shl( a_m, shift );
+    if ( a_m )
+    {
+        a_e = sub( a_e, shift );
+    }
+
+    shift = norm_l( b_m );
+    b_m = L_shl( b_m, shift );
+    if ( b_m )
+    {
+        b_e = sub( b_e, shift );
+    }
+
     if ( !a_m )
     {
         a_e = b_e;
         move16();
     }
-
     if ( !b_m )
     {
         b_e = a_e;
diff --git a/lib_enc/ivas_mct_enc_mct_fx.c b/lib_enc/ivas_mct_enc_mct_fx.c
index d402d834f9fa1b5dcbd409f5902e09c25ee907da..d684f714885f58c5ed0a123c09d53e8b8b5823d7 100644
--- a/lib_enc/ivas_mct_enc_mct_fx.c
+++ b/lib_enc/ivas_mct_enc_mct_fx.c
@@ -92,6 +92,7 @@ void getChannelEnergies_fx(
             sum2_e = st->hTcxEnc->spectrum_e[0];
             move16();
             nrg[ch] = 0;
+            nrg_e[ch] = 0;
             move32();
             FOR( n = 0; n < nSubframes; n++ )
             {