diff --git a/kmer_counter/kmc.h b/kmer_counter/kmc.h
index 8c239c8..a5a6f87 100644
--- a/kmer_counter/kmc.h
+++ b/kmer_counter/kmc.h
@@ -1016,37 +1016,17 @@ template <typename KMER_T, unsigned SIZE, bool QUAKE_MODE> bool CKMC<KMER_T, SIZ
 		save_bins_stats(Queues, Params, sizeof(KMER_T), KMER_T::QUALITY_SIZE, n_reads, Params.signature_len, Queues.s_mapper->GetMapSize(), Queues.s_mapper->GetMap());
 #endif
 
-	SortFunction<KMER_T> sort_func;
+	SortFunction<KMER_T> sort_func;	
+#ifdef __APPLE__
+	sort_func = RadixSort::RadixSortMSD<KMER_T, SIZE>;
+	CSmallSort<SIZE>::Adjust(384);
+#else
 	int iset = instrset_detect();
 	auto proc_name = CCpuInfo::GetBrand();
 	bool is_intel = CCpuInfo::GetVendor() == "GenuineIntel";
 	bool at_least_avx = iset >= 7;
 	std::transform(proc_name.begin(), proc_name.end(), proc_name.begin(), ::tolower);
 	bool is_xeon = proc_name.find("xeon") != string::npos;
-//#define PRINT_PROC_INFO
-#ifdef PRINT_PROC_INFO
-	if (is_xeon || (is_intel && at_least_avx))
-	{
-		if (is_xeon)
-			cout << "Xeon detected\n";
-		else
-			cout << "Some intel with at least avx\n";
-
-		if (iset >= 8)
-			sort_func = RadulsSort::RadixSortMSD_AVX2<KMER_T>, cout << "using avx2 version of RADULS\n";
-		else if (iset >= 7)
-			sort_func = RadulsSort::RadixSortMSD_AVX<KMER_T>, cout << "using avx version of RADULS\n";
-		else if (iset >= 5)
-			sort_func = RadulsSort::RadixSortMSD_SSE41<KMER_T>, cout << "using sse4.1 version of RADULS\n";
-		else if (iset >= 2)
-			sort_func = RadulsSort::RadixSortMSD_SSE2<KMER_T>, cout << "using sse2 version of RADULS\n";
-	}
-	else
-	{
-		sort_func = RadixSort::RadixSortMSD<KMER_T, SIZE>, cout << "using KMC3 radix instead of RADULS\n";
-		CSmallSort<SIZE>::Adjust(384);
-	}
-#else
 	if (is_xeon || (is_intel && at_least_avx))
 	{
 		if (iset >= 8)
diff --git a/makefile_mac b/makefile_mac
index 227de80..0d1ea9b 100644
--- a/makefile_mac
+++ b/makefile_mac
@@ -30,11 +30,7 @@ $(KMC_MAIN_DIR)/kb_storer.o \
 $(KMC_MAIN_DIR)/kmer.o \
 $(KMC_MAIN_DIR)/prob_qual.o
 
-RADULS_OBJS = \
-$(KMC_MAIN_DIR)/raduls_sse2.o \
-$(KMC_MAIN_DIR)/raduls_sse41.o \
-$(KMC_MAIN_DIR)/raduls_avx2.o \
-$(KMC_MAIN_DIR)/raduls_avx.o 
+
 KMC_LIBS = \
 $(KMC_MAIN_DIR)/libs/libz.1.2.5.dylib \
 $(KMC_MAIN_DIR)/libs/libbz2.1.0.5.dylib
@@ -81,18 +77,8 @@ $(KMC_OBJS) $(KMC_DUMP_OBJS) $(KMC_API_OBJS): %.o: %.cpp
 $(KMC_TOOLS_OBJS): %.o: %.cpp
 	$(CC) $(KMC_TOOLS_CFLAGS) -c $< -o $@
 
-$(KMC_MAIN_DIR)/raduls_sse2.o: $(KMC_MAIN_DIR)/raduls_sse2.cpp
-	$(CC) $(CFLAGS) -msse2 -c $< -o $@
-$(KMC_MAIN_DIR)/raduls_sse41.o: $(KMC_MAIN_DIR)/raduls_sse41.cpp
-	$(CC) $(CFLAGS) -msse4.1 -c $< -o $@
-$(KMC_MAIN_DIR)/raduls_avx.o: $(KMC_MAIN_DIR)/raduls_avx.cpp
-	$(CC) $(CFLAGS) -mavx -fabi-version=0 -c $< -o $@
-$(KMC_MAIN_DIR)/raduls_avx2.o: $(KMC_MAIN_DIR)/raduls_avx2.cpp
-	$(CC) $(CFLAGS) -mavx2 -mfma -fabi-version=0 -c $< -o $@
-$(KMC_MAIN_DIR)/instrset_detect.o: $(KMC_MAIN_DIR)/libs/vectorclass/instrset_detect.cpp
-	$(CC) $(CFLAGS) -c $< -o $@
-	
-kmc: $(KMC_OBJS) $(RADULS_OBJS) $(KMC_MAIN_DIR)/instrset_detect.o 
+
+kmc: $(KMC_OBJS)  
 	-mkdir -p $(KMC_BIN_DIR)
 	$(CC) $(CLINK) -o $(KMC_BIN_DIR)/$@ $^ $(KMC_LIBS)
 kmc_dump: $(KMC_DUMP_OBJS) $(KMC_API_OBJS)
@@ -109,4 +95,4 @@ clean:
 	-rm $(KMC_TOOLS_DIR)/*.o
 	-rm -rf bin
 
-all: kmc kmc_dump kmc_tools
\ No newline at end of file
+all: kmc kmc_dump kmc_tools