diff --git a/lib_com/options.h b/lib_com/options.h
index c98dce78ecfbead8832d7dec4d6fbcbce284b257..8977a4d1e89b840bfcdeb0cba117008ef6a93c3f 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -105,9 +105,9 @@
 #define REUSE_EVS_BE_GAINQ_LBR   // BE by adding one condition, but could be harmonized in a non-BE way. There is a small difference in how Etot is computed
 
 #endif
-#define FIX_ISSUE_1817_REPLACE_CARRY_OVERFLOW  /* FhG: bit-exact, replace carry and overflow operations by 64-bit operations, MR 1931 */
-#define FIX_1844_MISSING_FREE                                /* FhG: add missing free in ivas_binRenderer_convModuleClose_fx() */
-
+#define FIX_ISSUE_1817_REPLACE_CARRY_OVERFLOW   /* FhG: bit-exact, replace carry and overflow operations by 64-bit operations, MR 1931 */
+#define FIX_1844_MISSING_FREE                   /* FhG: add missing free in ivas_binRenderer_convModuleClose_fx() */
+#define FIX_1942_ASSERTION_LOWSHELF             /* FhG: Modified the target_gains_db_fx calculation in compute_t60_coeffs_fx() */
 /* #################### Start BASOP porting switches ############################ */
 
 #define FIX_1372_ISAR_POST_REND
diff --git a/lib_rend/ivas_reverb_fx.c b/lib_rend/ivas_reverb_fx.c
index ddcd6ef15f9fc5cdb0947df6c57dbe7988be13f1..92f428884be5109f5b3ebc7bf449966a01916abe 100644
--- a/lib_rend/ivas_reverb_fx.c
+++ b/lib_rend/ivas_reverb_fx.c
@@ -106,6 +106,11 @@ static Word16 wrap_rad_fixed(
 
 #define MAX_NR_OUTPUTS ( 2 )
 
+#ifdef FIX_1942_ASSERTION_LOWSHELF
+#define M60Q9  ( -30720 ) //-60 in Q9
+#define M120Q8 ( -30720 ) //-120 in Q8
+#endif
+
 const Word16 init_loop_delay[IVAS_REV_MAX_NR_BRANCHES] = { 37, 31, 29, 23, 19, 17, 13, 11 };
 const Word16 default_loop_delay_48k[IVAS_REV_MAX_NR_BRANCHES] = { 2309, 1861, 1523, 1259, 1069, 919, 809, 719 };
 const Word16 default_loop_delay_32k[IVAS_REV_MAX_NR_BRANCHES] = { 1531, 1237, 1013, 839, 709, 613, 541, 479 };
@@ -658,15 +663,19 @@ static ivas_error compute_t60_coeffs_fx(
 {
     Word16 bin_idx, loop_idx, tf_T60_len, len;
     ivas_error error;
-
+#ifdef FIX_1942_ASSERTION_LOWSHELF
+    Word16 loop_delay_sec_fx, tmp, tmp_e;
+#else
     Word16 loop_delay_sec_fx, tmp;
+#endif
     Word32 freq_Nyquist_fx = L_shr( output_Fs, 1 );
     Word16 target_gains_db_fx[RV_LENGTH_NR_FC]; // Q8
     Word16 norm_f_fx[RV_LENGTH_NR_FC];
     Word16 *pCoeffs_a_fx, *pCoeffs_b_fx;
     Word16 e;
+#ifndef FIX_1942_ASSERTION_LOWSHELF
     const Word16 min120q8 = -30720; // -120 in Q8
-
+#endif
     error = IVAS_ERR_OK;
     move32();
     tf_T60_len = nr_fc_fft_filter;
@@ -692,11 +701,47 @@ static ivas_error compute_t60_coeffs_fx(
             IF( EQ_32( pParams->pRt60_fx[bin_idx], 0 ) )
             {
                 // If RT60 is 0, target gain is -120dB
+#ifdef FIX_1942_ASSERTION_LOWSHELF
+                target_gains_db_fx[bin_idx] = M120Q8;
+                move16();
+#else
                 target_gains_db_fx[bin_idx] = min120q8;
+#endif
             }
             ELSE
             {
                 tmp = BASOP_Util_Divide3232_Scale( L_deposit_h( loop_delay_sec_fx ), pParams->pRt60_fx[bin_idx], &e );
+#ifdef FIX_1942_ASSERTION_LOWSHELF
+                tmp_e = add( e, sub( 0, 5 ) ); // L_deposit_h( loop_delay_sec_fx ):Q0.31, pParams->pRt60_fx[bin_idx]:Q5.26
+
+                tmp_e = add( tmp_e, 6 ); // + Q6.9(M60Q9)
+                target_gains_db_fx[bin_idx] = mult( M60Q9, tmp );
+
+                // gain < - 120 ? -120: gain
+                tmp_e = sub( tmp_e, 7 ); // - Q7.8(M120Q8)
+                IF( GT_16( tmp_e, 0 ) )
+                {
+                    IF( LT_16( target_gains_db_fx[bin_idx], shr( M120Q8, tmp_e ) ) )
+                    {
+                        target_gains_db_fx[bin_idx] = M120Q8; // Q8
+                        move16();
+                    }
+                    ELSE
+                    {
+                        target_gains_db_fx[bin_idx] = shl_r( target_gains_db_fx[bin_idx], tmp_e ); // Q8, gain must be less than 128
+                    }
+                }
+                ELSE
+                {
+                    target_gains_db_fx[bin_idx] = shl_r( target_gains_db_fx[bin_idx], tmp_e ); // Q8, gain must be less than 128
+                    IF( LT_16( target_gains_db_fx[bin_idx], M120Q8 ) )
+                    {
+                        target_gains_db_fx[bin_idx] = M120Q8; // Q8
+                        move16();
+                    }
+                }
+            }
+#else
                 IF( LT_16( e, -1 ) )
                 {
                     target_gains_db_fx[bin_idx] = min120q8;
@@ -713,6 +758,7 @@ static ivas_error compute_t60_coeffs_fx(
                 target_gains_db_fx[bin_idx] = -30720;
                 move16();
             }
+#endif
         }
 
         pCoeffs_a_fx = &pParams->pT60_filter_coeff_fx[add( shl( i_mult( len, loop_idx ), 1 ), len )]; // Q14
@@ -996,6 +1042,13 @@ static ivas_error calc_jot_t60_coeffs_fx(
     L_tmp = BASOP_util_Pow2( L_deposit_h( tmp_fx ), exph, &e );
     lin_gain_hf_fx = extract_l( L_shr( L_tmp, sub( 16, e ) ) );
 
+#ifdef FIX_1942_ASSERTION_LOWSHELF
+    IF( EQ_16( lin_gain_hf_fx, 0 ) )
+    {
+        lin_gain_hf_fx = 1;
+        move16();
+    }
+#endif
     /* call low-pass iir shelf */
     calc_low_shelf_first_order_filter_fx( pCoeffB_fx, pCoeffA_fx, f0_fx, lin_gain_lf_fx, lin_gain_hf_fx );
     return IVAS_ERR_OK;
@@ -1414,11 +1467,11 @@ static ivas_error setup_FDN_branches_fx(
  * Allocate and initialize FDN reverberation handle
  *------------------------------------------------------------------------*/
 #else
-                                          /*-------------------------------------------------------------------------
-                                           * ivas_reverb_open_fx()
-                                           *
-                                           * Allocate and initialize Crend reverberation handle
-                                           *------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------
+ * ivas_reverb_open_fx()
+ *
+ * Allocate and initialize Crend reverberation handle
+ *------------------------------------------------------------------------*/
 #endif
 ivas_error ivas_reverb_open_fx(
     REVERB_HANDLE *hReverb,                        /* i/o: Reverberator handle               */