diff --git a/src/framebuffer.c b/src/framebuffer.c
index d8ee465..25ee486 100644
--- a/src/framebuffer.c
+++ b/src/framebuffer.c
@@ -50,7 +50,7 @@ void putpixel(
 }
 
 void putc(
-	const char *character,
+	const unsigned char *character,
 	unsigned short x,
 	unsigned short y,
 	unsigned char r,
@@ -84,7 +84,7 @@ void putc(
 }
 
 void puts(
-	const char *text,
+	const unsigned char *text,
 	unsigned short x,
 	unsigned short y,
 	unsigned char r,
diff --git a/src/framebuffer.h b/src/framebuffer.h
index 144aa3f..27c7195 100644
--- a/src/framebuffer.h
+++ b/src/framebuffer.h
@@ -19,7 +19,7 @@ void putpixel(
 	unsigned char b
 );
 void putc(
-	const char *character,
+	const unsigned char *character,
 	unsigned short x,
 	unsigned short y,
 	unsigned char r,
@@ -27,7 +27,7 @@ void putc(
 	unsigned char b
 );
 void puts(
-	const char *text,
+	const unsigned char *text,
 	unsigned short x,
 	unsigned short y,
 	unsigned char r,
diff --git a/src/start32.s b/src/start32.s
index fd22a82..76cfc63 100644
--- a/src/start32.s
+++ b/src/start32.s
@@ -3,7 +3,11 @@
 .set MULTIBOOT_VIDEO_REQUEST,   1 << 2
 .set MULTIBOOT_AOUT_KLUDGE,     0 << 16
 .set MULTIBOOT_HEADER_MAGIC,    0x1BADB002
-.set MULTIBOOT_HEADER_FLAGS, MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_VIDEO_REQUEST | MULTIBOOT_AOUT_KLUDGE
+.set MULTIBOOT_HEADER_FLAGS, \
+	MULTIBOOT_PAGE_ALIGN \
+	| MULTIBOOT_MEMORY_INFO \
+	| MULTIBOOT_VIDEO_REQUEST \
+	| MULTIBOOT_AOUT_KLUDGE
 .set MULTIBOOT_CHECKSUM, -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
 
 #.section ".multiboottbabeee"