diff --git a/lib_com/options.h b/lib_com/options.h
index ac4ec92a18b1faf6eec1835c2d57853c27a597c9..bd233ffd05d07a863d934d486fd67c6c6dd316d6 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -86,6 +86,7 @@
 #define FIX_1843_IO_QFACTOR_INIT                             /* FhG: initialize CRend's io_qfactor also in IVAS_rend */
 
 
+#define FIX_1931_BIN_COHR_CROSS_MIX                    /* FhG: correct binauralCoherenceCrossmixGains_fx calculation */
 /* #################### 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 8d54c39ff5d930c93089e3143c167a6c59f188f9..be378babf1132c1965bcb0e9050bd477404c2331 100644
--- a/lib_rend/ivas_reverb_fx.c
+++ b/lib_rend/ivas_reverb_fx.c
@@ -236,6 +236,11 @@ static void ivas_binaural_reverb_setReverbTimes_fx(
         L_tmp = Mpy_32_16_1( output_Fs, tmp ); /*- exp */
         binCenterFreq_exp = add( 31, exp );
         binCenterFreq_fx = L_shr( L_tmp, 1 ); // divide by 2
+#ifdef FIX_1931_BIN_COHR_CROSS_MIX
+        norm = norm_l( binCenterFreq_fx );
+        binCenterFreq_fx = L_shl( binCenterFreq_fx, norm );
+        binCenterFreq_exp = sub( binCenterFreq_exp, norm );
+#endif
         IF( bin == 0 )
         {
             diffuseFieldICC_fx = ONE_IN_Q31;
@@ -259,9 +264,12 @@ static void ivas_binaural_reverb_setReverbTimes_fx(
 
             /* binCenterFreq / 2700.0f */
             L_tmp = Mpy_32_32( binCenterFreq_fx, 795364 /* 1 / 2700 in Q31 */ );
+#ifdef FIX_1931_BIN_COHR_CROSS_MIX
+            L_tmp = L_shl( L_tmp, binCenterFreq_exp ); /* Q31 */
+#else
             norm = norm_l( L_tmp );
             L_tmp = L_shl( L_tmp, norm ); /* Q31 */
-
+#endif
             /* ( 1.0f - binCenterFreq / 2700.0f ) */
             L_tmp = L_sub( ONE_IN_Q31, L_tmp ); /* Q31 */
 
@@ -1381,11 +1389,11 @@ 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               */