diff --git a/lib_com/options.h b/lib_com/options.h
index ab920f8dbcba53066e5e03c7f2a11170e8a861d1..8ff5ac61340ada342f8ea24172a9157aa249afb3 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -158,6 +158,7 @@
 #define FIX_958_667_DISABLE_INITIAL_PLC_SUPPRESSION     /* Ericsson: Fix related to issue 667 in IVAS BASOP. Handling of initial lost frame in IVAS causes non-BE on EVS BASOP 26.444 */ 
 #define FIX_957_REMOVE_PANNING_DEAD_CODE                /* VA: Remove obsolete non-diegetic panning related code. */
 #define FIX_956_DECODER_COMMAND_LINE_FIX                /* VA: Output correct error message when the decoder command-line has too many mandatory arguments. */
+#define FIX_955_FASTCONV_REND_IN_ISM                    /* VA: put FastConv rendering call under DEBUGGING */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_dec/ivas_jbm_dec.c b/lib_dec/ivas_jbm_dec.c
index 9c724cdfd9aa16bdb8dee1d212f1453da69c25cc..b0199a301e7b65ba24afa794b63b9d065cdb4dcb 100644
--- a/lib_dec/ivas_jbm_dec.c
+++ b/lib_dec/ivas_jbm_dec.c
@@ -1062,11 +1062,23 @@ ivas_error ivas_jbm_dec_render(
             {
                 ivas_apply_non_diegetic_panning( p_output, st_ivas->hDecoderConfig->non_diegetic_pan_gain, *nSamplesRendered );
             }
+#ifdef FIX_955_FASTCONV_REND_IN_ISM
+#ifdef DEBUGGING
+            else if ( st_ivas->renderer_type == RENDERER_SBA_LINEAR_ENC || st_ivas->renderer_type == RENDERER_BINAURAL_FASTCONV )
+#else
+            else if ( st_ivas->renderer_type == RENDERER_SBA_LINEAR_ENC )
+#endif
+            {
+                /* Convert to Ambisonics */
+                ivas_ism2sba_sf( st_ivas->hTcBuffer->tc, p_output, st_ivas->hIsmRendererData, st_ivas->nchan_transport, *nSamplesRendered, st_ivas->hTcBuffer->n_samples_rendered, st_ivas->hIntSetup.ambisonics_order );
+            }
+#else
             else if ( st_ivas->renderer_type == RENDERER_SBA_LINEAR_ENC || st_ivas->renderer_type == RENDERER_BINAURAL_FASTCONV )
             {
                 /* Convert to Ambisonics; used also for ISM->HOA3->binaural rendering */
                 ivas_ism2sba_sf( st_ivas->hTcBuffer->tc, p_output, st_ivas->hIsmRendererData, st_ivas->nchan_transport, *nSamplesRendered, st_ivas->hTcBuffer->n_samples_rendered, st_ivas->hIntSetup.ambisonics_order );
             }
+#endif
 
             /* Binaural rendering */
             if ( st_ivas->renderer_type == RENDERER_BINAURAL_OBJECTS_TD )