diff --git a/lib_com/options.h b/lib_com/options.h
index d2b08ca6d918fa34129c8bfef7acd5ac5ac99c41..8b22dc430b84cf629e28cebd799f8d538207ae4a 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -172,6 +172,7 @@
 
 #define NONBE_FIX_1176_OSBA_REVERB_JBM_ASAN_ERROR       /* Ericsson: Issue 1176, fix in TDREND_firfilt for subframes shorter than the filter length */
 #define NONBE_1240_FIX_CORE_SELECTION_ISM_SW            /* VA: issue 1240: Remove the forcing of the TCX core in ISM when switching from a high bitarte to a low one */
+#define NONBE_1246_INF_COHERENCE_IN_HIGH_LEVEL_DTX      /* Ericsson: Issue 1246: High level input which triggers DTX can lead to numerical overflow in coherence calculation */
 #define NONBE_1211_DTX_BR_SWITCHING                     /* VA: issue 1211: fix crash in MASA DTX bitrate switching */
 #define NONBE_1217_INIT_OBJ_EDIT                        /* VA: issue 1217: do object editing only when objects metadata is available */
 
diff --git a/lib_enc/ivas_stereo_cng_enc.c b/lib_enc/ivas_stereo_cng_enc.c
index ac938f02edc15faaa3dd2d4ba3e5f87bee5cf3d2..49430f2d1fb8a4740eb1d9dee00326084c5f8a80 100644
--- a/lib_enc/ivas_stereo_cng_enc.c
+++ b/lib_enc/ivas_stereo_cng_enc.c
@@ -95,7 +95,11 @@ void stereo_dft_enc_sid_calc_coh(
             for ( k = hStereoDft->band_limits[b]; k < hStereoDft->band_limits[b + 1]; k++ )
             {
                 coh_weight = hStereoDft->DFT[0][2 * k] * hStereoDft->DFT[0][2 * k] + hStereoDft->DFT[0][2 * k + 1] * hStereoDft->DFT[0][2 * k + 1];
+#ifdef NONBE_1246_INF_COHERENCE_IN_HIGH_LEVEL_DTX
+                cohBand[b] += coh_weight * ( ( hStereoDft->xspec_smooth[2 * k] * hStereoDft->xspec_smooth[2 * k] + hStereoDft->xspec_smooth[2 * k + 1] * hStereoDft->xspec_smooth[2 * k + 1] ) / ( hStereoDft->Spd_L_smooth[k] * hStereoDft->Spd_R_smooth[k] + EPSILON ) );
+#else
                 cohBand[b] += coh_weight * ( hStereoDft->xspec_smooth[2 * k] * hStereoDft->xspec_smooth[2 * k] + hStereoDft->xspec_smooth[2 * k + 1] * hStereoDft->xspec_smooth[2 * k + 1] ) / ( hStereoDft->Spd_L_smooth[k] * hStereoDft->Spd_R_smooth[k] + EPSILON );
+#endif
                 coh_weight_sum += coh_weight;
             }
             if ( coh_weight_sum > 0 )