diff --git a/src/arch/x86/cpu.c b/src/arch/x86/cpu.c
index 91cbcb05fa..683b8855b2 100644
--- a/src/arch/x86/cpu.c
+++ b/src/arch/x86/cpu.c
@@ -15,7 +15,7 @@
 
 #if ENV_X86_32
 /* Standard macro to see if a specific flag is changeable */
-static inline int flag_is_changeable_p(uint32_t flag)
+static inline bool flag_is_changeable_p(uint32_t flag)
 {
 	uint32_t f1, f2;
 
diff --git a/src/arch/x86/cpu_common.c b/src/arch/x86/cpu_common.c
index d7d701d016..0403703b86 100644
--- a/src/arch/x86/cpu_common.c
+++ b/src/arch/x86/cpu_common.c
@@ -6,7 +6,7 @@
 
 #if ENV_X86_32
 /* Standard macro to see if a specific flag is changeable */
-static inline int flag_is_changeable_p(uint32_t flag)
+static inline bool flag_is_changeable_p(uint32_t flag)
 {
 	uint32_t f1, f2;