diff --git a/lib_com/options.h b/lib_com/options.h
index e985a75ef692e2bca8b617b23d74e09798ba70a1..fca9b4b0f646c849ef65c960f065f9722b2511ae 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -101,6 +101,7 @@
 #define NONBE_FIX2614_LP_CNG_ASSERT                     /* FhG: */
 #define FIX_FLOAT_1600_OMASA_WRONG_RENDER_PATH          /* Nokia: float issue 1600: fix initialization condition of stereo type detection for OMASA */
 #define FIX_BASOP_1765_MASA1TC_CNG_MISMATCH             /* Nokia: BASOP issue 1765: Improve accuracy of FD CNG noise estimation */
+#define FIX_BASOP_2627_PARAM_MC_ILD_REMAP_EXP           /* FhG: BASOP #2627: accumulate 10^(ILD/10) using a dynamic exponent */
 
 /* ##################### End NON-BE switches ########################### */
 
diff --git a/lib_dec/ivas_mc_param_dec_fx.c b/lib_dec/ivas_mc_param_dec_fx.c
index 4a191876ceba2636d140195202f3821748567b92..ac13c315f98ee993c140c0984d0c50d1ebab47bd 100644
--- a/lib_dec/ivas_mc_param_dec_fx.c
+++ b/lib_dec/ivas_mc_param_dec_fx.c
@@ -756,9 +756,11 @@ ivas_error ivas_param_mc_dec_reconfig_fx(
             Word16 num_param_lfe;
             Word16 *p_icc_new_fx = hParamMC->icc_q_fx;  // Q15
             Word16 *p_ild_new_fx = hParamMC->icld_q_fx; // Q8
+#ifndef FIX_BASOP_2627_PARAM_MC_ILD_REMAP_EXP
             Word16 p_ild_new_e = 23;
             move16();
             Word16 p_ild_new_tmp;
+#endif
 
             /* ICC */
             num_param_lfe = hParamMC->hMetadataPMC->icc_mapping_conf->icc_map_size_lfe;
@@ -785,6 +787,23 @@ ivas_error ivas_param_mc_dec_reconfig_fx(
             {
                 FOR( param_idx = 0; param_idx < num_param_lfe; param_idx++ )
                 {
+#ifdef FIX_BASOP_2627_PARAM_MC_ILD_REMAP_EXP
+                    Word32 acc_m = 0;
+                    move32();
+                    Word16 acc_e = 0;
+                    move16();
+                    FOR( source_param_idx = 0; source_param_idx < parameter_band_mapping.n_source_bands[new_param_band_idx]; source_param_idx++ )
+                    {
+                        Word32 term_m;
+                        Word16 term_e;
+                        term_m = BASOP_util_Pow2( L_mult0( 10885 /*log2(10)/10*2^15*/, ild_q_old_fx[parameter_band_mapping.source_band_idx[new_param_band_idx][source_param_idx] * num_param_lfe + param_idx] ), 8, &term_e );
+                        term_m = Mpy_32_16_1( term_m, parameter_band_mapping.source_band_factor_fx[new_param_band_idx][source_param_idx] ); /* * factor (Q15) */
+                        acc_m = BASOP_Util_Add_Mant32Exp( acc_m, acc_e, term_m, term_e, &acc_e );
+                    }
+                    /* log2 term is Q25; Mpy_32_16_1( Q25, Q13 ) -> Q(25+13-15) = Q23; L_shl( Q23, 1 ) -> Q24 - Q16 = Q8 */
+                    *p_ild_new_fx = extract_h( L_shl( Mpy_32_16_1( L_add( BASOP_Util_Log2( acc_m ), L_shl( acc_e, Q25 ) ), 24660 /*10*log10(2) in Q13*/ ), 1 ) ); // Q8
+                    move16();
+#else
                     *p_ild_new_fx = 0;
                     move16();
                     FOR( source_param_idx = 0; source_param_idx < parameter_band_mapping.n_source_bands[new_param_band_idx]; source_param_idx++ )
@@ -795,6 +814,7 @@ ivas_error ivas_param_mc_dec_reconfig_fx(
                     }
                     *p_ild_new_fx = extract_l( L_shr( Mpy_32_16_1( L_add( BASOP_Util_Log2( *p_ild_new_fx ), L_add( 16 << Q25, L_shl( p_ild_new_e, 25 ) ) ), 24660 /*3.Q13*/ ), 15 ) ); // Q8
                     move16();
+#endif
                     p_ild_new_fx++;
                 }
             }