diff --git a/lib_com/options.h b/lib_com/options.h
index 37634f3ffd4d74eae5cbf29624c213b0e6f87578..2d952edea1c07d027b34534746ed747fc1b33ec1 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -186,9 +186,9 @@
 #define FIX_955_FASTCONV_REND_IN_ISM                    /* VA: put FastConv rendering call under DEBUGGING */
 #define NONBE_FIX_967_ISM_MONO_DMX                            /* FhG: issue 967: accumulating energies in ISM mono DMX */
 #define NONBE_FIX_968_ISM_BRIR_WITH_HEADROTATION_5MS_FIX      /* FhG : issue #968: differences between 5ms and 20ms rendering for discrete ISM with BRIR and head rotation*/
+#define FIX_969_USAN_IGF_ARITH                          /* FhG: issue 969: fix USAN error in igf_sce_dec; same issue as #962 */
 #define FIX_959_MASA_LINEAR_REND                        /* VA: issue 959: remove unused calling of ivas_sba_linear_renderer() in MASA rendering */
 
-
 /* #################### End BASOP porting switches ############################ */
 
 /* clang-format on */
diff --git a/lib_dec/igf_scf_dec.c b/lib_dec/igf_scf_dec.c
index 67c4fe0a192e9deeba0baae5d915f41ca62a0944..c0e7584a2e77bda093badc57308a9b3fb26f068c 100644
--- a/lib_dec/igf_scf_dec.c
+++ b/lib_dec/igf_scf_dec.c
@@ -211,7 +211,12 @@ static void decode_sfe_vector(
        |    c b
        |      e  --> t
     */
+#ifdef FIX_969_USAN_IGF_ARITH
+    int16_t pred;
+    uint16_t pred_tmp;
+#else
     uint16_t pred;
+#endif
     int16_t f, ctx, ctx_f, ctx_t;
 
     for ( f = 0; f < length; f++ )
@@ -221,7 +226,12 @@ static void decode_sfe_vector(
             if ( f == 0 )
             {
                 /* decode one of the IGF_SYMBOLS_IN_TABLE == 27 alphabet symbols using the new raw AC function */
+#ifdef FIX_969_USAN_IGF_ARITH
+                ari_decode_14bits_s27_ext( st, &pred_tmp, &hPrivateData->acState, hPrivateData->cf_se00 );
+                pred = (int16_t) pred_tmp;
+#else
                 ari_decode_14bits_s27_ext( st, &pred, &hPrivateData->acState, hPrivateData->cf_se00 );
+#endif
                 x[f] = pred << 2;
                 x[f] += arith_decode_bits( &hPrivateData->acState, st, 2 ); /* LSBs as 2 bit raw */
             }