diff --git a/lib_com/options.h b/lib_com/options.h
index 5ce08d7ec124f75233f22e285fd31313fc7bb998..3cad3e09ff058e7ff120e77bb48cd3d163a8b87e 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -150,6 +150,7 @@
 
 #define PARAMMC_SHORT_ENC_MDFT                          /* FhG: Issue 410: complexity optimization for parametric Multichannel modes */
 
+#define FIX_422                                         /* FhG: Issue 422: re-introduce fix for noisy speech buffer in ParamISM */
 /* ################## End DEVELOPMENT switches ######################### */
 /* clang-format on */
 #endif
diff --git a/lib_enc/ivas_ism_param_enc.c b/lib_enc/ivas_ism_param_enc.c
index abe5842f70e8f0aed5279e3091e01a27e9a98bc2..32fb6af515af26caf85c501e63eda9c167bb9abb 100644
--- a/lib_enc/ivas_ism_param_enc.c
+++ b/lib_enc/ivas_ism_param_enc.c
@@ -429,7 +429,11 @@ void ivas_param_ism_compute_noisy_speech_flag(
     /* For the current frame, make a decision based on some core-coder flags */
     if ( st_ivas->hSCE[0]->hCoreCoder[0]->flag_noisy_speech_snr && st_ivas->hSCE[1]->hCoreCoder[0]->flag_noisy_speech_snr )
     {
+#ifdef FIX_422
+        if ( st_ivas->hSCE[0]->hCoreCoder[0]->vad_flag || st_ivas->hSCE[1]->hCoreCoder[0]->vad_flag )
+#else
         if ( st_ivas->hSCE[0]->hCoreCoder[0]->vad_flag && st_ivas->hSCE[1]->hCoreCoder[0]->vad_flag )
+#endif
         {
             st_ivas->hDirAC->hParamIsm->noisy_speech_buffer[i] = 0;
         }