diff --git a/main.c b/main.c
index 491d242..5679968 100644
--- a/main.c
+++ b/main.c
@@ -5,6 +5,11 @@
 #include "axl_vlq.h"
 #include <windows.h>
 
+void *memset(void *s, int c, size_t n)
+{
+    return axl_memset(s, (i8)c, n);
+}
+
 int _start(void)
 {
     SetConsoleOutputCP(CP_UTF8);
@@ -38,11 +43,11 @@ int _start(void)
         axl_puts("{");
         for(int base = 2; base < 17; ++base)
         {
-            i8 buff[32];
-            axl_memset(buff, '\0', 32);
+            i8 buff[32] = {'\0'};
+            //axl_memset(buff, '\0', 32);
             
-            i8 text[256];
-            axl_memset(text, '\0', 256);
+            i8 text[256] = {'\0'};
+            //axl_memset(text, '\0', 256);
 
             axl_strcat(text, axl_itoa(i, buff, 10));
             axl_strcat(text, "\tof base\t");
diff --git a/makefile b/makefile
index 2551326..94f11f2 100644
--- a/makefile
+++ b/makefile
@@ -1,8 +1,8 @@
 CC = clang
 AXL_SOURCES = $(filter-out main.c %_test.c, $(wildcard *.c))
 TEST_EXES = $(patsubst %.c,%.exe,$(wildcard *_test.c))
-TEST_CFLAGS = -Wall -Wextra -Werror -pedantic -std=c11 -static -Oz -fsigned-char
-CFLAGS = $(TEST_CFLAGS) -nostdlib -ffreestanding
+TEST_CFLAGS = -Wall -Wextra -Werror -pedantic -std=c17 -static -Oz -fsigned-char
+CFLAGS = $(TEST_CFLAGS) -nostdlib -ffreestanding -fno-builtin
 LDFLAGS = -Wl,/SUBSYSTEM:CONSOLE,/ENTRY:_start -fuse-ld=lld
 LIBS = -lkernel32
 SOURCES = $(AXL_SOURCES) main.c