diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c
index 3198df3ed2..4ee54a370f 100644
--- a/src/cpu/x86/mtrr/earlymtrr.c
+++ b/src/cpu/x86/mtrr/earlymtrr.c
@@ -43,7 +43,8 @@ int get_free_var_mtrr(void)
 static
 #endif
 void set_var_mtrr(
-	unsigned reg, unsigned base, unsigned size, unsigned type)
+	unsigned int reg, unsigned int base, unsigned int size,
+	unsigned int type)
 {
 	/* Bit Bit 32-35 of MTRRphysMask should be set to 1 */
 	/* FIXME: It only support 4G less range */
diff --git a/src/cpu/x86/tsc/delay_tsc.c b/src/cpu/x86/tsc/delay_tsc.c
index 0c5dc9e60b..c8b7ba01dc 100644
--- a/src/cpu/x86/tsc/delay_tsc.c
+++ b/src/cpu/x86/tsc/delay_tsc.c
@@ -116,7 +116,7 @@ static inline unsigned long get_clocks_per_usec(void)
 	return car_get_var(clocks_per_usec);
 }
 
-void udelay(unsigned us)
+void udelay(unsigned int us)
 {
 	unsigned long long start;
 	unsigned long long current;