diff --git a/lib_com/options.h b/lib_com/options.h
index 72e4fa35d4e2bdf0b03f06db7c6867612da96957..b8869c96e6b02e658ba2e3ccd652a464d0fa67b3 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -165,6 +165,7 @@
 #define FIX_FLOAT_1526_DIRAC_MEM_LEAK                   /* FhG: potential memory leak in DirAC handles in case of format switching */
 #define ALIGN_ACELP_CORE                                /* VA: align ACELP core functions with BASOP */
 #define FIX_1532_MSAN_ERR_AMR_FIRST_FRAME_IS_SID        /* FhG: fix msan complaint in AMR-WB when first frame is an SID */
+#define FIX_FLOAT_1535_ARI_RES_Q_CLEANUP                /* FhG: remove dead code from tcx_ari_res_Q_spec() */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_enc/tcx_utils_enc.c b/lib_enc/tcx_utils_enc.c
index 6d7cd854978a56436249a49a5f76cc162b34a905..4a6c46b5cb7efa1e5a4cf3cf9b46a9423dbccdba 100644
--- a/lib_enc/tcx_utils_enc.c
+++ b/lib_enc/tcx_utils_enc.c
@@ -1106,6 +1106,9 @@ int16_t tcx_ari_res_Q_spec(
     fac_p = 0.5f - fac_m;
     num_zeros = 0;
 
+#ifdef FIX_FLOAT_1535_ARI_RES_Q_CLEANUP
+    assert( x_fac != NULL );
+#else
     if ( x_fac == NULL )
     {
         for ( i = 0; i < L_frame; ++i )
@@ -1166,6 +1169,7 @@ int16_t tcx_ari_res_Q_spec(
 
         return bits;
     }
+#endif
 
     for ( i = 0; i < L_frame; ++i )
     {