diff --git a/lib_com/options.h b/lib_com/options.h
index ea5fad27e23e96688cce2aedff3efa67053b5b3c..7a6d1adad0509d9dcb606402a32e2ce7cc2939a1 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -81,6 +81,7 @@
 #define FIX_2141_ASSERT_IN_OMASA_BITRATE_SWITSCHING          /* FhG: Replace L_shl with L_shl_sat to prevent overflow when calculating scale factors for very small numbers in the logarithmic domain */
 #define FIX_APA_EXECS_SCALING                                /* VA: fix scaling of JBM APA buffer */
 #define FIX_2164_ASSERT_IN_OMASA_PREPROC_FOR_EDIT            /* Nokia: Issue 2164: Prevent overflow when calculating equalization coefficient for editing before clamping to safe range */
+#define FIX_BASOP_ASSERT_IN_TONAL_MDCT_PLC                   /* FhG: fix for issue 2165 - using saturating addition in tonal MDCT PLC function */
 
 /* ################### End FIXES switches ########################### */
 
diff --git a/lib_dec/TonalComponentDetection_fx.c b/lib_dec/TonalComponentDetection_fx.c
index 409b975f5c18312785f64650e5bfda0631cb6d75..bfb0b0428e6dd9b3d5413d014e0c7b08dea19ae4 100644
--- a/lib_dec/TonalComponentDetection_fx.c
+++ b/lib_dec/TonalComponentDetection_fx.c
@@ -454,7 +454,11 @@ static void getEnvelope(
 
     FOR( i = 0; i < n2; i++ )
     {
+#ifdef FIX_BASOP_ASSERT_IN_TONAL_MDCT_PLC
+        sum = L_add_sat( sum, powerSpec[i] ); /*powerSpec_exp*/
+#else
         sum = L_add( sum, powerSpec[i] ); /*powerSpec_exp*/
+#endif
     }
     /* No need for PTR_INIT for powerSpec[i+n2] as we continue from the previous loop */
     FOR( i = 0; i < n1; i++ )