diff --git a/lib_com/options.h b/lib_com/options.h
index 5b6855dbd2c027a8a9346c09cd695d6c5ef466cc..b2972a19b762d6693bc30ee3b59b3a546f0b2842 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -120,4 +120,5 @@
 #define FIX_ISSUE_1167                          /* Ittiam: Fix for Issue 1167: Encoder crash for OSBA ISM3SBA1 at 13.2 and 16.4 kbps in gauss_L2_ivas_fx() */
 #define FIX_1009_REPLACE_DIV_SQRT_BY_ISQRT_LC   /* FhG: Reduce workload of binaural rendering: replace 1./tmp & sqrt by Isqrt32 */
 #define FIX_1113_OPT_DIRAC_BIN_REND             /* FhG: Various optimizations to ivas_dirac_dec_binaual_functions.c */
+#define FIX_ISSUE_1187                          /* Ittiam: Fix for issue 1187: Assertion error observed in evs_enc_fx (with option stereo_dmx_evs) from bass_pf_enc_fx function*/
 #endif
diff --git a/lib_enc/bass_psfilter_enc_fx.c b/lib_enc/bass_psfilter_enc_fx.c
index e43fa6bc6354df3ea507a887d5e635d903dbf21e..ec6f2d049523388ba741ea2ab60eccad18ce6d87 100644
--- a/lib_enc/bass_psfilter_enc_fx.c
+++ b/lib_enc/bass_psfilter_enc_fx.c
@@ -311,7 +311,11 @@ Word16 bass_pf_enc_fx(
         st = sub( s2, s2_old );
         FOR( i = 0; i < tmp16; i++ )
         {
+#ifdef FIX_ISSUE_1187
+            noise_buf[i] = shl_sat( mem_bpf->noise_buf[i], st );
+#else
             noise_buf[i] = shl( mem_bpf->noise_buf[i], st );
+#endif
             move16();
         }
         Copy( noise_buf + l_subfr, mem_bpf->noise_buf, tmp16 );