diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index d0c797e27d7a193ce464c0b5f800fb20d0e6b043..e091ce730576b875d4ea6d9fad08c04fddc807c7 100755
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -769,7 +769,10 @@ 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
old mode 100644
new mode 100755
index 7065d18d9114789de0b208306ba3f52e7b4ac46c..40898c21ff7427e3e8f85a50518641d2295de72b
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -163,7 +163,8 @@
 #define FIX_1003_PARAMISM_BINAURAL_RECONFIG_USAN        /* FhG: fix for #1003: fix USAN caused by ParamISM reconfig                    */
 #define FIX_1001_ARI_HM_OVERFLOW                        /* FhG: fix for undef behaviour in in the harmonic TCX model arithmetic coder */
 #define FIX_901_PARAMMC_DEAD_CODE                       /* FhG: issue 901: remove dead ParamMC code             */
-#define FIX_1008_EXTORIENT_TARGET_INTERPOLATION          /* FhG: issue #1008, external orientation init was wrong for 5ms */
+#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 BE switches ################################## */
diff --git a/lib_dec/ivas_jbm_dec.c b/lib_dec/ivas_jbm_dec.c
index 89aa3f8d4c766bd8d14c9a1d6b5e33c939f79664..6f4fb2f1ccee7be1c6adb7a2142e6ad0bfd9696a 100644
--- a/lib_dec/ivas_jbm_dec.c
+++ b/lib_dec/ivas_jbm_dec.c
@@ -1120,7 +1120,11 @@ 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
             else if ( st_ivas->renderer_type == RENDERER_SBA_LINEAR_ENC || st_ivas->renderer_type == RENDERER_BINAURAL_FASTCONV )
diff --git a/lib_dec/ivas_mono_dmx_renderer.c b/lib_dec/ivas_mono_dmx_renderer.c
index ffe5cb54be39a72852af974a6626c098bb30e340..7b6552707afd8a32840bdc9164841bcd530c0905 100644
--- a/lib_dec/ivas_mono_dmx_renderer.c
+++ b/lib_dec/ivas_mono_dmx_renderer.c
@@ -221,7 +221,10 @@ 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                  */
 )
@@ -230,9 +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;
 }