diff --git a/lib_com/ivas_prot_fx.h b/lib_com/ivas_prot_fx.h
index b1a03bd2ef9b681988e95cda9c974d178d01aa23..d989a1f68d07cf5052f2b551d628c2e7f02f0bb6 100644
--- a/lib_com/ivas_prot_fx.h
+++ b/lib_com/ivas_prot_fx.h
@@ -1155,6 +1155,9 @@ void ivas_mono_stereo_downmix_mcmasa_fx(
 );
 
 void ivas_apply_non_diegetic_panning_fx(
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    Word32 *input_f_fx,                                             /* i  : non-diegetic object                                         */
+#endif
     Word32 *output_f_fx[],                 /* i/o: core-coder transport mono channel/stereo output  */
     const Word16 non_diegetic_pan_gain_fx, /* i  : non-diegetic panning gain                        */
     const Word16 output_frame              /* i  : output frame length per channel                  */
diff --git a/lib_com/options.h b/lib_com/options.h
index 51319adce7eb0038ecb9adb211046ea1bba2c4c3..27a2da35ade0d9a99b346322b936ee7ff7cd8ae0 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -140,6 +140,7 @@
 /* #define NONBE_FIX_991_PARAMBIN_BINARY_HRTF   */           /* Nokia: issue #991: fix using of binary file HRTF in ParamBin (to activate when USE_NEW_HRTF_BINARY_FILE_FORMAT and FIX_777_COMBI_RENDER_CONFIG_FILE are on ) */
 
 #define FIX_1008_EXTORIENT_TARGET_INTERPOLATION          /* FhG: issue #1008, external orientation init was wrong for 5ms */
+#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_fx.c b/lib_dec/ivas_jbm_dec_fx.c
index beb6535a2489698e40cc4d66322f147c4d7d7871..57063e7b7158e969cd4ffc41d1bd1f3822db9b53 100644
--- a/lib_dec/ivas_jbm_dec_fx.c
+++ b/lib_dec/ivas_jbm_dec_fx.c
@@ -1992,7 +1992,11 @@ ivas_error ivas_jbm_dec_render_fx(
             }
             ELSE IF( EQ_32( st_ivas->renderer_type, RENDERER_NON_DIEGETIC_DOWNMIX ) )
             {
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+                ivas_apply_non_diegetic_panning_fx( p_tc_fx[0], p_output_fx, st_ivas->hDecoderConfig->non_diegetic_pan_gain_fx, *nSamplesRendered );
+#else
                 ivas_apply_non_diegetic_panning_fx( p_output_fx, st_ivas->hDecoderConfig->non_diegetic_pan_gain_fx, *nSamplesRendered );
+#endif
             }
 #ifdef DEBUGGING
             ELSE IF( EQ_32( st_ivas->renderer_type, RENDERER_SBA_LINEAR_ENC ) || EQ_32( st_ivas->renderer_type, RENDERER_BINAURAL_FASTCONV ) )
diff --git a/lib_dec/ivas_mono_dmx_renderer_fx.c b/lib_dec/ivas_mono_dmx_renderer_fx.c
index 66b14cc56b8f8be47685304ec1217cd6e1469ee4..4f04c4dd8da59f05cda720a60dc07a1fb8591bcc 100644
--- a/lib_dec/ivas_mono_dmx_renderer_fx.c
+++ b/lib_dec/ivas_mono_dmx_renderer_fx.c
@@ -318,7 +318,10 @@ void ivas_mono_stereo_downmix_mcmasa_fx(
  *------------------------------------------------------------------------*/
 
 void ivas_apply_non_diegetic_panning_fx(
-    Word32 *output_f_fx[],                 /* i/o: core-coder transport mono channel/stereo output  */
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    Word32 *input_f_fx, /* i  : non-diegetic object                                 */
+#endif
+    Word32 *output_f_fx[],                 /* o: core-coder transport mono channel/stereo output       */
     const Word16 non_diegetic_pan_gain_fx, /* i  : non-diegetic panning gain                        Q15*/
     const Word16 output_frame              /* i  : output frame length per channel                  Q11*/
 )
@@ -328,8 +331,13 @@ void ivas_apply_non_diegetic_panning_fx(
     pan_left_fx = add( mult( non_diegetic_pan_gain_fx, 16384 ), 16384 ); // 0.5.Q15 = 16384
     pan_right_fx = sub( 32767, pan_left_fx );
 
+#ifdef FIX_1009_ISM_NONDIEGETIC_PANNING
+    v_multc_fixed( input_f_fx, L_shl( L_deposit_l( pan_right_fx ), 16 ), output_f_fx[1], output_frame );
+    v_multc_fixed( input_f_fx, L_shl( L_deposit_l( pan_left_fx ), 16 ), output_f_fx[0], output_frame );
+#else
     v_multc_fixed( output_f_fx[0], L_shl( L_deposit_l( pan_right_fx ), 16 ), output_f_fx[1], output_frame );
     v_multc_fixed( output_f_fx[0], L_shl( L_deposit_l( pan_left_fx ), 16 ), output_f_fx[0], output_frame );
+#endif
 
     return;
 }