diff --git a/lib_com/nelp.c b/lib_com/nelp.c
index 887f412c386e35235f03711fc08cce0262c4c750..e7a86ee32c7bfcc5a9542594389a96b3b0f969f3 100644
--- a/lib_com/nelp.c
+++ b/lib_com/nelp.c
@@ -121,7 +121,11 @@ void generate_nelp_excitation(
 
         for ( j = 0; j < len; j++ )
         {
+#ifdef FIX_970_USAN_IN_NELP_SEED
+            tmp[j] = ( ( *seed ) = (int16_t) ( 521 * ( *seed ) + 259 ) ) / PCM16_TO_FLT_FAC;
+#else
             tmp[j] = ( ( *seed ) = 521 * ( *seed ) + 259 ) / PCM16_TO_FLT_FAC;
+#endif
             tmp1[j] = ABSVAL( tmp[j] );
             I[j] = j;
         }
diff --git a/lib_com/options.h b/lib_com/options.h
index 142e1ea7106465cc02b45fbc2338569a5a8b61a5..d8f50211dc79c446482879d3a5327bd0ecfa471a 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -186,6 +186,7 @@
 #define NON_BE_FIX_EVS_USAN_ERR_IN_WAVEADJUST           /* FhG: address issue 1037 */
 #define FIX_1038_OFFSET_TO_NULL_PTR_IN_EVS_TCX_BFI      /* FhG: move setting of pointers for parameter decoding so they are skipped in lost frames when they are not needed */
 #define NONBE_FIX_1056_ISM_RATE_SWITCH                  /* FhG: Fix #1056: fix TC buffer udpate on a ISM rate switch */	
+#define FIX_970_USAN_IN_NELP_SEED
 
 #define NONBE_FIX_984_OMASA_EXT_OUTPUT                  /* Nok: issue 1497 - porting OMASA EXT MR   */
 /* #################### End BASOP porting switches ############################ */