diff --git a/lib_com/options.h b/lib_com/options.h
index dc7357918a7940af6fab10b7bb3aa88a45de136e..7fa7ca32af4c354a70ec2526689731ab74900d44 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -114,6 +114,7 @@
 #define FIX_NCHAN_BUFFERS                               /* VA: issue 1322: Correct the number of float buffers (channels) at the decoder */
 #define FIX_RENDERER_STACK                              /* VA: issue 1322: reduction of renderers' buffers size */
 #define FIX_1370_EXTERNAL_ORIENTATION_CHECK             /* Nokia: add sanity check for Euler angles for external orientations */
+#define NONBE_FIX_1197_OMASA_META_BUFFER                /* Nokia: OMASA ISM_MASA_MODE_PARAM_ONE_OBJ history zero in rateswitching - port 251 */
 
 // object-editing feature porting
 #define TMP_FIX_SPLIT_REND                              // temporary fix to split-rendering (it follows the later state of the framework but it is needed now because of current test-conditions)
diff --git a/lib_dec/ivas_omasa_dec_fx.c b/lib_dec/ivas_omasa_dec_fx.c
index 811935a6037f5ecc7c5b6c359084e4b308b80c04..75e5a0afcd6a43c996ef5d0ff7292079f1ff95c2 100644
--- a/lib_dec/ivas_omasa_dec_fx.c
+++ b/lib_dec/ivas_omasa_dec_fx.c
@@ -662,6 +662,25 @@ ivas_error ivas_omasa_dec_config_fx(
             ivas_omasa_separate_object_renderer_close( st_ivas );
         }
 
+#ifdef NONBE_FIX_1197_OMASA_META_BUFFER
+        test();
+        IF( EQ_32( st_ivas->ism_mode, ISM_MASA_MODE_PARAM_ONE_OBJ ) && st_ivas->hMasaIsmData != NULL ) /* this structure is in use only in ISM_MASA_MODE_PARAM_ONE_OBJ */
+        {
+            MASA_ISM_DATA_HANDLE hMasaIsmData = st_ivas->hMasaIsmData;
+            FOR( Word16 obj_idx = 0; obj_idx < MAX_NUM_OBJECTS; obj_idx++ )
+            {
+                set_s( hMasaIsmData->azimuth_ism_fx[obj_idx], 0, MAX_PARAM_SPATIAL_SUBFRAMES + DELAY_MASA_PARAM_DEC_SFR );
+                set_s( hMasaIsmData->elevation_ism_fx[obj_idx], 0, MAX_PARAM_SPATIAL_SUBFRAMES + DELAY_MASA_PARAM_DEC_SFR );
+                FOR( int16_t sf = 0; sf < MAX_PARAM_SPATIAL_SUBFRAMES + DELAY_MASA_PARAM_DEC_SFR; sf++ )
+                {
+                    set_l( hMasaIsmData->energy_ratio_ism_fx[obj_idx][sf], 0, CLDFB_NO_CHANNELS_MAX );
+                }
+            }
+            set_s( hMasaIsmData->azimuth_separated_ism_fx, 0, MAX_PARAM_SPATIAL_SUBFRAMES + DELAY_MASA_PARAM_DEC_SFR );
+            set_s( hMasaIsmData->elevation_separated_ism_fx, 0, MAX_PARAM_SPATIAL_SUBFRAMES + DELAY_MASA_PARAM_DEC_SFR );
+        }
+#endif
+
         IF( EQ_32( st_ivas->renderer_type, RENDERER_BINAURAL_PARAMETRIC ) )
         {
             IF( EQ_32( st_ivas->ism_mode, ISM_MASA_MODE_DISC ) )