diff --git a/lib_com/options.h b/lib_com/options.h
index 08206202fcf831cbb36d7bf42667126d2c89a0a3..f73c6155bad7fee9b04186c7215743279192d4ef 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -203,14 +203,12 @@
 #define NONBE_FIX_947_STEREO_DMX_EVS_PHA                      /* Orange: Fix issues on PHA */
 #define NONBE_FIX_951_MCMASA_5MS_RENDERING                    /* Nokia: issue #951: Differences for 5ms and 20ms rendering for McMASA at 13.2kbps to BINAURAL */
 
-
 #define NONBE_FIX_979_OSBA_STEREO_5MS                   /* FhG : issue #979 : 5ms and 20ms output different for OSBA and stereo */
 #define FIX_983_DISC_ISM_DIGEST_NUM_OBJS                /* FhG: issue #983: the discrete ISM digest function uses the wrong number of objects */
 #define FIX_966_VAR_OVERFLOW_IN_HARM_MODEL_ARI          /* FhG: fix and undef behaviour bug in the harmonic TCX model arithmetic coder */
 #define NONBE_FIX_974_OSBA_JBM_MONO_RS_USAN             /* FhG : issue #974: usan in mono and stereo output in OSBA JBM RS */
-
 #define NONBE_FIX_982_OMASA_DELAY_COMP_5MS               /* FhG : issue #982 : 5ms and 20ms output different for OMASA */
-
+#define NONBE_FIX_975_JBM_USAN                          /* FhG: Fix issue #975, USAN in JBM decoding ad 13.2kbps */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_dec/lib_dec.c b/lib_dec/lib_dec.c
index fd5f57385a38258cacadeab162382b0aef25b444..f59168ffce18b0bab2e4c6c27cc8d6c513c02b5b 100644
--- a/lib_dec/lib_dec.c
+++ b/lib_dec/lib_dec.c
@@ -2397,8 +2397,18 @@ ivas_error IVAS_DEC_VoIP_FeedFrame(
         return IVAS_ERR_INVALID_BITSTREAM;
     }
 
-    /* check if frame contains a partial copy and get its offset */
-    evs_dec_previewFrame( au, auSize, &partialCopyFrameType, &partialCopyOffset );
+#ifdef NONBE_FIX_975_JBM_USAN
+    partialCopyFrameType = 0;
+    partialCopyOffset = 0;
+
+    if ( hIvasDec->mode == IVAS_DEC_MODE_EVS )
+    {
+#endif
+        /* check if frame contains a partial copy and get its offset */
+        evs_dec_previewFrame( au, auSize, &partialCopyFrameType, &partialCopyOffset );
+#ifdef NONBE_FIX_975_JBM_USAN
+    }
+#endif
 
     /* create data unit for primary copy in the frame */
     dataUnit = JB4_AllocDataUnit( hIvasDec->hVoIP->hJBM );