diff --git a/lib_com/options.h b/lib_com/options.h
index 04285e2094381d56b262fe2abaa01d1058ebce11..ae52bff8fee20036c6b695c38b087da96c94ce73 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -133,7 +133,7 @@
 #define FIX_1452_DEFAULT_REVERB                         /* Nokia/Philips/FhG: Fix default room presets and their usage in renderer */
 #define FIX_2547_ALIGN_CONDITIONS_IN_CORE_SW_DEC        /* VA : Basop issue 2547: Align conditions in core sw dec */
 #define FIX_2547_ALIGN_CONDITIONS_IN_CORE_SW_DEC_EVS    /* VA : Basop issue 2547: Align conditions in core sw dec, condition that could affect EVS as well, but adapted to keep EVS BE */
-
+#define FIX_BASOP_2548_ProcessIGF_fx_PREDICTIONGAIN     /* FhG: fixes obvious bug for IVAS path. For EVS path, issue is still not resolved */
 
 /* ##################### End NON-BE switches ########################### */
 
diff --git a/lib_enc/tcx_utils_enc_fx.c b/lib_enc/tcx_utils_enc_fx.c
index 0e38df6b237f0fe071476c6db9ae2c8721a00e63..97d17c11d206c02ef1b6b105b65dc935043a2f08 100644
--- a/lib_enc/tcx_utils_enc_fx.c
+++ b/lib_enc/tcx_utils_enc_fx.c
@@ -3602,7 +3602,19 @@ void ProcessIGF_fx(
     }
 
     test();
-    tns_predictionGain = L_deposit_l( hIGFEnc->tns_predictionGain ); // todo: mul, 2026-03-12: check, why this is in Q23
+#ifdef FIX_BASOP_2548_ProcessIGF_fx_PREDICTIONGAIN
+    IF( EQ_16( st->element_mode, EVS_MONO ) )
+    {
+        // this is a bug in the EVS legacy code, the IVAS branch is correct - don't fix for now, to keep EVS bit-exact
+        tns_predictionGain = L_deposit_l( hIGFEnc->tns_predictionGain );
+    }
+    ELSE
+    {
+        tns_predictionGain = L_deposit_h( hIGFEnc->tns_predictionGain );
+    }
+#else
+    tns_predictionGain = L_deposit_l( hIGFEnc->tns_predictionGain );
+#endif
     IF( LT_32( tns_predictionGain, ONE_POINT_ONE_FIVE_Q23 ) && LT_16( predictionGain, ONE_POINT_ONE_FIVE_Q7 ) )
     {
         hIGFEnc->flatteningTrigger = 1;