diff --git a/drivers/gpu/nvgpu/include/nvgpu/posix/types.h b/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
index 97686eec2..12078b94d 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
@@ -43,10 +43,10 @@ typedef unsigned short		u16;
 typedef unsigned int		u32;
 typedef unsigned long long	u64;
 
-typedef char			s8;
-typedef short			s16;
-typedef int			s32;
-typedef long long		s64;
+typedef signed char		s8;
+typedef signed short		s16;
+typedef signed int		s32;
+typedef signed long long	s64;
 
 #define min_t(type, a, b)		\
 	({				\