diff --git a/decoder/ixheaacd_mps_bitdec.c b/decoder/ixheaacd_mps_bitdec.c
index 83816890..b1fbf8da 100644
--- a/decoder/ixheaacd_mps_bitdec.c
+++ b/decoder/ixheaacd_mps_bitdec.c
@@ -1392,7 +1392,7 @@ static IA_ERRORCODE ixheaacd_factor_funct(WORD32 ott_vs_tot_db, WORD32 quant_mod
   WORD32 constfact;
 
   if (ott_vs_tot_db > 0) return IA_XHEAAC_MPS_DEC_EXE_FATAL_INVALID_MPS_PARAM;
-  db_diff = -ott_vs_tot_db;
+  db_diff = ixheaac_negate32_sat(ott_vs_tot_db);
 
   switch (quant_mode) {
     case QUANT_MODE_0:
@@ -1416,7 +1416,9 @@ static IA_ERRORCODE ixheaacd_factor_funct(WORD32 ott_vs_tot_db, WORD32 quant_mod
 
   if (db_diff > (x_linear << 5)) {
     WORD32 db_diff_fix = db_diff >> 5;
-    *factor = (db_diff_fix - (WORD32)x_linear) * constfact + ONE_IN_Q24;
+    *factor = ixheaac_add32_sat(
+        ixheaac_sat64_32(ixheaac_mult64(ixheaac_sub32_sat(db_diff_fix, x_linear), constfact)),
+        ONE_IN_Q24);
   } else {
     *factor = ONE_IN_Q24;
   }
diff --git a/decoder/ixheaacd_mps_hybrid_filt.c b/decoder/ixheaacd_mps_hybrid_filt.c
index 57177d32..60c1b7a4 100644
--- a/decoder/ixheaacd_mps_hybrid_filt.c
+++ b/decoder/ixheaacd_mps_hybrid_filt.c
@@ -760,15 +760,15 @@ VOID ixheaacd_apply_ana_hyb_filt_bank_create_x(
     *p_hybrid_re++ = m_temp_output_real[7];
     *p_hybrid_re++ = m_temp_output_real[0];
     *p_hybrid_re++ = m_temp_output_real[1];
-    *p_hybrid_re++ = (m_temp_output_real[2] + m_temp_output_real[5]);
-    *p_hybrid_re++ = (m_temp_output_real[3] + m_temp_output_real[4]);
+    *p_hybrid_re++ = ixheaac_add32_sat(m_temp_output_real[2], m_temp_output_real[5]);
+    *p_hybrid_re++ = ixheaac_add32_sat(m_temp_output_real[3], m_temp_output_real[4]);
 
     *p_hybrid_im++ = m_temp_output_imag[6];
     *p_hybrid_im++ = m_temp_output_imag[7];
     *p_hybrid_im++ = m_temp_output_imag[0];
     *p_hybrid_im++ = m_temp_output_imag[1];
-    *p_hybrid_im++ = (m_temp_output_imag[2] + m_temp_output_imag[5]);
-    *p_hybrid_im++ = (m_temp_output_imag[3] + m_temp_output_imag[4]);
+    *p_hybrid_im++ = ixheaac_add32_sat(m_temp_output_imag[2], m_temp_output_imag[5]);
+    *p_hybrid_im++ = ixheaac_add32_sat(m_temp_output_imag[3], m_temp_output_imag[4]);
 
     ixheaacd_2ch_filtering(
         &(hyb_state->buffer_lf_real[1][time_slot + nr_samples_shift_lf + 1 - PROTO_LEN]),
diff --git a/decoder/ixheaacd_mps_process.c b/decoder/ixheaacd_mps_process.c
index 64663386..4d3e73f4 100644
--- a/decoder/ixheaacd_mps_process.c
+++ b/decoder/ixheaacd_mps_process.c
@@ -257,6 +257,7 @@ VOID ixheaacd_hybrid_qmf_analysis(ia_heaac_mps_state_struct *pstr_mps_state) {
   }
 }
 
+ATTR_NO_SANITIZE_INTEGER
 VOID ixheaacd_merge_res_decor(ia_heaac_mps_state_struct *pstr_mps_state) {
   WORD32 ts, qs, row, res;