diff --git a/[refs] b/[refs]
index 3c8245597f0b..1d9577963074 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 75d3bce2fc0a80f435fe12f2c9ed2632c8ac29e4
+refs/heads/master: 7fafd91d85181e946207bed18c44addc47e36c63
diff --git a/trunk/arch/x86/boot/printf.c b/trunk/arch/x86/boot/printf.c
index c1d00c0274c4..50e47cdbdddd 100644
--- a/trunk/arch/x86/boot/printf.c
+++ b/trunk/arch/x86/boot/printf.c
@@ -56,7 +56,7 @@ static char *number(char *str, long num, int base, int size, int precision,
 	if (type & LEFT)
 		type &= ~ZEROPAD;
 	if (base < 2 || base > 36)
-		return 0;
+		return NULL;
 	c = (type & ZEROPAD) ? '0' : ' ';
 	sign = 0;
 	if (type & SIGN) {