diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 875c8b417e7c622ba18796467cba3fb990e36212..9e15502344448017958a80e8d3b982b6ba9afae0 100755
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -1095,11 +1095,13 @@ void ivas_param_ism_dec_close(
     const AUDIO_CONFIG output_config                            /* i  : output audio configuration                  */
 );
 
+#ifndef FIX_1022_REMOVE_PARAMISM_DEC
 void ivas_param_ism_dec(
     Decoder_Struct *st_ivas,                                    /* i/o: IVAS decoder structure                      */
     float *output_f[]                                           /* i/o: synthesized core-coder transport channels/DirAC output  */
 );
 
+#endif
 void ivas_ism_dec_digest_tc(
     Decoder_Struct *st_ivas                                     /* i/o: IVAS decoder structure                      */
 );
diff --git a/lib_com/options.h b/lib_com/options.h
index 84ba87c643f3c680bb0e3cbadf8962bc2c2db0d8..a7d1d5fa5c9f6393953039e28f722556147f0ec9 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -159,6 +159,7 @@
 #define FIX_1027_GSC_INT_OVERFLOW                       /* VA: issue 2207: overflow in GSC */
 #define FIX_1024_REMOVE_PARAMMC_MIXING_MAT              /* VA: issue 1024: remove unused function ivas_param_mc_get_mono_stereo_mixing_matrices() */
 #define FIX_1023_REMOVE_PARAMMC_DEC                     /* VA: issue 1023: remove unused function ivas_param_mc_dec() */
+#define FIX_1022_REMOVE_PARAMISM_DEC                    /* VA: issue 1022: remove unused function ivas_param_ism_dec() */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_dec/ivas_ism_param_dec.c b/lib_dec/ivas_ism_param_dec.c
index 9d1e179c8b6fdb2c12f247094d0dd2498e063fba..9337ccb08a0a1313e7a5fbb9474ad1226874d0c6 100644
--- a/lib_dec/ivas_ism_param_dec.c
+++ b/lib_dec/ivas_ism_param_dec.c
@@ -324,7 +324,7 @@ static void ivas_param_ism_render_slot(
     return;
 }
 
-
+#ifndef FIX_1022_REMOVE_PARAMISM_DEC
 static void ivas_param_ism_rendering(
     PARAM_ISM_DEC_HANDLE hParamIsmDec,
     SPAT_PARAM_REND_COMMON_DATA_HANDLE hSpatParamRendCom,
@@ -361,7 +361,7 @@ static void ivas_param_ism_rendering(
 
     return;
 }
-
+#endif
 
 static ivas_error ivas_param_ism_rendering_init(
     PARAM_ISM_RENDERING_HANDLE hParamIsmRendering,
@@ -729,7 +729,7 @@ void ivas_param_ism_dec_close(
     return;
 }
 
-
+#ifndef FIX_1022_REMOVE_PARAMISM_DEC
 /*-------------------------------------------------------------------------*
  * ivas_param_ism_dec()
  *
@@ -973,7 +973,7 @@ void ivas_param_ism_dec(
 
     return;
 }
-
+#endif
 
 /*-------------------------------------------------------------------------*
  * ivas_ism_dec_digest_tc()
@@ -1121,7 +1121,7 @@ void ivas_param_ism_dec_digest_tc(
         nchan_out_woLFE = st_ivas->hIntSetup.nchan_out_woLFE;
     }
 
-    push_wmops( "ivas_param_ism_dec" );
+    push_wmops( "ivas_param_ism_dec_digest_tc" );
 
     /* general setup */
     ivas_jbm_dec_get_adapted_linear_interpolator( DEFAULT_JBM_CLDFB_TIMESLOTS, nCldfbSlots, hParamIsmDec->hParamIsmRendering->interpolator );
@@ -1533,8 +1533,10 @@ void ivas_param_ism_params_to_masa_param_mapping(
         st_ivas->hISMDTX.dtx_flag = 1;
     }
 
+#ifndef FIX_1022_REMOVE_PARAMISM_DEC
     if ( st_ivas->nchan_ism > 1 )
     {
+#endif
         if ( st_ivas->hISMDTX.dtx_flag )
         {
             float energy_ratio;
@@ -1598,6 +1600,7 @@ void ivas_param_ism_params_to_masa_param_mapping(
                 }
             }
         }
+#ifndef FIX_1022_REMOVE_PARAMISM_DEC
     }
     else
     {
@@ -1617,6 +1620,7 @@ void ivas_param_ism_params_to_masa_param_mapping(
             }
         }
     }
+#endif
 
     return;
 }