diff --git a/lib_com/options.h b/lib_com/options.h
index ae79ff4cbb8c04499d3f45c5684ce1f30f1e59df..e61ca2f050267b5494f73b5f5cf7312eccbc3d5b 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -207,6 +207,7 @@
 #define NONBE_FIX_1012_1013_JBM_FLUSH_BUFFER            /* FhG: issues #1012, 1013: JBM flush function uses wrong output buffer */
 #define FIX_998_UNUSED_FUNCTION                         /* FhG: issue 998: delete unused funtion ivas_dirac_dec_get_response_split_order */ 
 #define NONBE_FIX_1014_1015_1016_OSBA_JBM_STEREO              /* FhG: issues #1014, #1015, #1016: fix tc buffer info update in the discrete ism renderer */
+#define NONBE_FIX_987_PARAMC_BINAURAL_REVERB_RENDERING       /* FhG: issue 987: solution b: downmix HOA3 to stereo a input for the reverberator */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_dec/ivas_binRenderer_internal.c b/lib_dec/ivas_binRenderer_internal.c
index deffa8ed17c26aae62b8e0584d3c7880172906ab..563e264374437440a466c52b5e7212ff603a910b 100644
--- a/lib_dec/ivas_binRenderer_internal.c
+++ b/lib_dec/ivas_binRenderer_internal.c
@@ -881,20 +881,46 @@ static void ivas_binaural_obtain_DMX(
             set_zero( outRealRightPtr, CLDFB_NO_CHANNELS_MAX );
             set_zero( outImagRightPtr, CLDFB_NO_CHANNELS_MAX );
 
-            for ( chIdx = 0; chIdx < hBinRenderer->nInChannels; chIdx++ )
+#ifdef NONBE_FIX_987_PARAMC_BINAURAL_REVERB_RENDERING
+            /*Ambisonics input requires different processing*/
+            if ( hBinRenderer->nInChannels == 16 )
             {
-                float foa_const = hBinRenderer->hReverb->foa_enc[chIdx][1];
+                float *inRealPtr_W, *inImagPtr_W;
+                float *inRealPtr_Y, *inImagPtr_Y;
+
+                inRealPtr_W = (float *) &( RealBuffer[0][k][0] );
+                inImagPtr_W = (float *) &( ImagBuffer[0][k][0] );
 
-                inRealPtr = (float *) &( RealBuffer[chIdx][k][0] );
-                inImagPtr = (float *) &( ImagBuffer[chIdx][k][0] );
+                inRealPtr_Y = (float *) &( RealBuffer[1][k][0] );
+                inImagPtr_Y = (float *) &( ImagBuffer[1][k][0] );
 
                 for ( bandIdx = 0; bandIdx < hBinRenderer->conv_band; bandIdx++ )
                 {
-                    outRealLeftPtr[bandIdx] += inRealPtr[bandIdx] * ( 1.f + foa_const );
-                    outImagLeftPtr[bandIdx] += inImagPtr[bandIdx] * ( 1.f + foa_const );
+                    outRealLeftPtr[bandIdx] = inRealPtr_W[bandIdx] + inRealPtr_Y[bandIdx];
+                    outImagLeftPtr[bandIdx] = inImagPtr_W[bandIdx] + inImagPtr_Y[bandIdx];
+
+                    outRealRightPtr[bandIdx] = inRealPtr_W[bandIdx] - inRealPtr_Y[bandIdx];
+                    outImagRightPtr[bandIdx] = inImagPtr_W[bandIdx] - inImagPtr_Y[bandIdx];
+                }
+            }
+            else
+#endif
+            {
+                for ( chIdx = 0; chIdx < hBinRenderer->nInChannels; chIdx++ )
+                {
+                    float foa_const = hBinRenderer->hReverb->foa_enc[chIdx][1];
+
+                    inRealPtr = (float *) &( RealBuffer[chIdx][k][0] );
+                    inImagPtr = (float *) &( ImagBuffer[chIdx][k][0] );
+
+                    for ( bandIdx = 0; bandIdx < hBinRenderer->conv_band; bandIdx++ )
+                    {
+                        outRealLeftPtr[bandIdx] += inRealPtr[bandIdx] * ( 1.f + foa_const );
+                        outImagLeftPtr[bandIdx] += inImagPtr[bandIdx] * ( 1.f + foa_const );
 
-                    outRealRightPtr[bandIdx] += inRealPtr[bandIdx] * ( 1.f - foa_const );
-                    outImagRightPtr[bandIdx] += inImagPtr[bandIdx] * ( 1.f - foa_const );
+                        outRealRightPtr[bandIdx] += inRealPtr[bandIdx] * ( 1.f - foa_const );
+                        outImagRightPtr[bandIdx] += inImagPtr[bandIdx] * ( 1.f - foa_const );
+                    }
                 }
             }
         }
@@ -1187,7 +1213,11 @@ ivas_error ivas_binRenderer_open(
 #ifdef NONBE_FIX_1058_DECODER_ERROR_WITH_REVERB_ROOM
         if ( hBinRenderer->hInputSetup->is_loudspeaker_setup == 0 )
 #else
+#ifdef NONBE_FIX_987_PARAMC_BINAURAL_REVERB_RENDERING
         if ( hBinRenderer->hInputSetup->is_loudspeaker_setup == 0 && hBinRenderer->nInChannels != HOA3_CHANNELS )
+#else
+        if ( hBinRenderer->hInputSetup->is_loudspeaker_setup == 0 )
+#endif
 #endif
         {
             for ( k = 0; k < 11; k++ )