diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 0781f806b93afdb0273aee4f743b210ef73c0401..61cf9a92acec389f2be4b7f389412cadf06441e8 100644
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -803,7 +803,10 @@ void dtx_read_padding_bits(
 );
 
 void ivas_apply_non_diegetic_panning( 
-    float *output_f[],                                          /* i/o: core-coder transport mono channel/stereo output             */
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    float *input_f,                                             /* i  : non-diegetic object                                         */
+#endif
+    float *output_f[],                                          /* o  : core-coder transport mono channel/stereo output             */
     const float non_diegetic_pan_gain,                          /* i  : non-diegetic panning gain                                   */
     const int16_t output_frame                                  /* i  : output frame length per channel                             */
 );
diff --git a/lib_com/options.h b/lib_com/options.h
index 78b5efbc6483783be3a7c50396291d20062c0783..aebec00146223c347d79b0c9fb6517b9b1ab4172 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -223,6 +223,7 @@
 #define NONBE_FIX_1004_USAN_DTX_MASA_NO_DIRS             /* Nokia: fix USAN error caused by non-setting of correctly the number of MASA directions in DTX */
 #define FIX_1008_EXTORIENT_TARGET_INTERPOLATION          /* FhG: issue #1008, external orientation init was wrong for 5ms */
 /* #define NONBE_FIX_991_PARAMBIN_BINARY_HRTF */             /* Nokia: issue #991: fix using of binary file HRTF in ParamBin (to actiate when USE_NEW_HRTF_BINARY_FILE_FORMAT and FIX_777_COMBI_RENDER_CONFIG_FILE are on  )*/
+#define FIX_1009_ISM_NONDIEGETIC_PANNING                /* FhG: issue #1009: use correct object buffer for ISM1 non-diegetic pan      */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_dec/ivas_jbm_dec.c b/lib_dec/ivas_jbm_dec.c
index b8ea5cd795db2ae262d4cab7c7eb5c6797c10614..eddc339412df573a5be11121e73859a84b1dab9f 100644
--- a/lib_dec/ivas_jbm_dec.c
+++ b/lib_dec/ivas_jbm_dec.c
@@ -1080,7 +1080,11 @@ ivas_error ivas_jbm_dec_render(
             }
             else if ( st_ivas->renderer_type == RENDERER_NON_DIEGETIC_DOWNMIX )
             {
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+                ivas_apply_non_diegetic_panning( p_tc[0], p_output, st_ivas->hDecoderConfig->non_diegetic_pan_gain, *nSamplesRendered );
+#else
                 ivas_apply_non_diegetic_panning( p_output, st_ivas->hDecoderConfig->non_diegetic_pan_gain, *nSamplesRendered );
+#endif
             }
 
 #ifdef DEBUGGING
diff --git a/lib_dec/ivas_mono_dmx_renderer.c b/lib_dec/ivas_mono_dmx_renderer.c
index 2059ead6db8f6e67c1964edadae362d3ee0b37f2..07d6011aa69a339d937762c62240026315a38129 100644
--- a/lib_dec/ivas_mono_dmx_renderer.c
+++ b/lib_dec/ivas_mono_dmx_renderer.c
@@ -220,7 +220,10 @@ void ivas_mono_stereo_downmix_mcmasa(
  *------------------------------------------------------------------------*/
 
 void ivas_apply_non_diegetic_panning(
-    float *output_f[],                 /* i/o: core-coder transport mono channel/stereo output  */
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    float *input_f, /* i  : non-diegetic object                              */
+#endif
+    float *output_f[],                 /* o: core-coder transport mono channel/stereo output    */
     const float non_diegetic_pan_gain, /* i  : non-diegetic panning gain                        */
     const int16_t output_frame         /* i  : output frame length per channel                  */
 )
@@ -230,8 +233,13 @@ void ivas_apply_non_diegetic_panning(
     pan_left = ( non_diegetic_pan_gain + 1.f ) * 0.5f;
     pan_right = 1.f - pan_left;
 
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    v_multc( input_f, pan_right, output_f[1], output_frame );
+    v_multc( input_f, pan_left, output_f[0], output_frame );
+#else
     v_multc( output_f[0], pan_right, output_f[1], output_frame );
     v_multc( output_f[0], pan_left, output_f[0], output_frame );
+#endif
 
     return;
 }