diff --git a/arch/x86/include/asm/types.h b/arch/x86/include/asm/types.h
index b0218d2..d473405 100644
--- a/arch/x86/include/asm/types.h
+++ b/arch/x86/include/asm/types.h
@@ -29,12 +29,16 @@
 typedef __signed__ long long __s64;
 typedef unsigned long long __u64;
 
+typedef signed char s8;
 typedef unsigned char u8;
 
+typedef signed short s16;
 typedef unsigned short u16;
 
+typedef signed int s32;
 typedef unsigned int u32;
 
+typedef signed long long s64;
 typedef unsigned long long u64;
 
 #endif /* __ASSEMBLY__ */