diff --git a/lib_com/options.h b/lib_com/options.h
index a5263a49211ffedee314a98108f9e2301f19e86d..8fce6a1925593b3b10fe42174de39b4d070309ff 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -89,6 +89,7 @@
 #define HARMONIZE_2502_GENERATE_COMFORT_NOISE_DEC       /* FhG: harmonize generate_comfort_noise_dec_fx() and generate_comfort_noise_dec_ivas_fx() */
 #define FIX_BASOP_2650_DEC_PRM_TCX                      /* FhG: Simplify calculation of st->bits_frame_core in dec_prm_tcx(), align function name to float */
 #define FIX_2648_IVAS_ISM_DEC_DIGEST_TC                 /* FhG: improvements on ivas_ism_dec_digest_tc_fx() */
+#define BE_FIX_BASOP_2543_MISMATCH_REND_OPEN_FX_FL      /* FhG: Aligns implementation of split rendering init loops in IVAS_REND_Open between float and BASOP */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_rend/lib_rend_fx.c b/lib_rend/lib_rend_fx.c
index 2eba6449ae75c2662fdd5d2cd683f50f7a08552c..a498ed0986f20703275f9b49034a60ff4c656703 100644
--- a/lib_rend/lib_rend_fx.c
+++ b/lib_rend/lib_rend_fx.c
@@ -3918,7 +3918,11 @@ ivas_error IVAS_REND_Open(
         move32();
         hIvasRend->inputsIsm[i].tdRendWrapper.hBinRendererTd = NULL;
         move32();
+#ifdef BE_FIX_BASOP_2543_MISMATCH_REND_OPEN_FX_FL
+        FOR( j = 0; j < (Word16) ( sizeof( hIvasRend->inputsIsm[i].splitTdRendWrappers ) / sizeof( *hIvasRend->inputsIsm[i].splitTdRendWrappers ) ); ++j )
+#else
         FOR( j = 0; j < MAX_HEAD_ROT_POSES - 1; ++j )
+#endif
         {
             hIvasRend->inputsIsm[i].splitTdRendWrappers[j].hBinRendererTd = NULL;
             move32();
@@ -3957,7 +3961,11 @@ ivas_error IVAS_REND_Open(
         move32();
         hIvasRend->inputsMc[i].hMcMasa = NULL;
         move32();
+#ifdef BE_FIX_BASOP_2543_MISMATCH_REND_OPEN_FX_FL
+        FOR( j = 0; j < (Word16) ( sizeof( hIvasRend->inputsMc[i].splitTdRendWrappers ) / sizeof( *hIvasRend->inputsMc[i].splitTdRendWrappers ) ); ++j )
+#else
         FOR( j = 0; j < MAX_HEAD_ROT_POSES - 1; ++j )
+#endif
         {
             hIvasRend->inputsMc[i].splitTdRendWrappers[j].hBinRendererTd = NULL;
             move32();