diff --git a/lib_com/options.h b/lib_com/options.h
index b466204932e744b4e5df895f45029c2418190fd0..bb61c714ce58404929dfb3adc9559e1f7653e596 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -140,6 +140,7 @@
 #define FIX_938_COMPILER_WARNING                        /* FhG: Fix compiler warning in ivas_mdct_core_reconstruct() */
 #define FIX_1376_MISSING_ISM_METADATA                   /* FhG: IVAS_rend: throw error if there exists an ISM input without a corresponding metadata file path */
 #define FIX_1385_INIT_IGF_STOP_FREQ                     /* FhG: Initialize infoIGFStopFreq in init_igf_dec() */
+#define FIX_1387_INIT_PRM_SQQ                           /* FhG: initialize pointer prm_sqQ, which might be uninitialized in case of bfi == 1 */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_dec/ivas_mdct_core_dec_fx.c b/lib_dec/ivas_mdct_core_dec_fx.c
index 78df29c0ae71ec63e2c4569ced3916660901526b..bfe81d4bb02aa31be6b9c853da71c5da1c944693 100644
--- a/lib_dec/ivas_mdct_core_dec_fx.c
+++ b/lib_dec/ivas_mdct_core_dec_fx.c
@@ -699,6 +699,9 @@ void ivas_mdct_core_invQ_fx(
     set16_fx( bitsRead, 0, CPE_CHANNELS );
     tmp_concealment_method = 0;
     move16();
+#ifdef FIX_1387_INIT_PRM_SQQ
+    prm_sqQ = NULL; /* set prm_sqQ to NULL - in case of bfi == 1 it's not set or needed, but it triggers sanitizers */
+#endif
 
     FOR( ch = 0; ch < CPE_CHANNELS; ch++ )
     {