diff --git a/bflc/driver.c b/bflc/driver.c
index 176f829..4cb5b31 100644
--- a/bflc/driver.c
+++ b/bflc/driver.c
@@ -24,7 +24,7 @@
 
 #include <string.h>
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 
 #if defined _WIN32 || defined _WIN64
 #   define WIN32_LEAN_AND_MEAN
diff --git a/libbflc/front/brainfuck.h b/libbflc/front/brainfuck.h
index f53896a..70062ca 100644
--- a/libbflc/front/brainfuck.h
+++ b/libbflc/front/brainfuck.h
@@ -15,7 +15,7 @@
 */
 
 #ifndef BFLC_FRONT_BRAINFUCK_H
-#define BFLC_FRONTBRAINFUCK_H
+#define BFLC_FRONT_BRAINFUCK_H
 
 #include "../ir.h"
 #include "../error.h"
diff --git a/libbflc/mem.c b/libbflc/mem.c
index c20f583..254fcba 100644
--- a/libbflc/mem.c
+++ b/libbflc/mem.c
@@ -1,6 +1,6 @@
 #include "mem.h"
 
-#include <malloc.h>
+#include <stdlib.h>
 
 static void *
 mem_alloc(size_t size, void *extra)