diff --git a/headers/posix/arch/ppc/fenv.h b/headers/posix/arch/ppc/fenv.h
index 7458b30b49..e6658a2bc8 100644
--- a/headers/posix/arch/ppc/fenv.h
+++ b/headers/posix/arch/ppc/fenv.h
@@ -95,7 +95,7 @@ extern const fenv_t	__fe_dfl_env;
 union __fpscr {
 	double __d;
 	struct {
-		__uint32_t __junk;
+		uint32 __junk;
 		fenv_t __reg;
 	} __bits;
 };
diff --git a/headers/posix/arch/x86_64/fenv.h b/headers/posix/arch/x86_64/fenv.h
index b4d7379e8f..59732b1d15 100644
--- a/headers/posix/arch/x86_64/fenv.h
+++ b/headers/posix/arch/x86_64/fenv.h
@@ -34,15 +34,15 @@
 
 typedef struct {
 	struct {
-		__uint32_t	__control;
-		__uint32_t	__status;
-		__uint32_t	__tag;
+		uint32	__control;
+		uint32	__status;
+		uint32	__tag;
 		char		__other[16];
 	} __x87;
-	__uint32_t		__mxcsr;
+	uint32		__mxcsr;
 } fenv_t;
 
-typedef	__uint16_t	fexcept_t;
+typedef	uint16	fexcept_t;
 
 /* Exception flags */
 #define	FE_INVALID	0x01