diff --git a/prelude/slang-cuda-prelude.h b/prelude/slang-cuda-prelude.h
index 6fe87b0384..5585ad6e00 100644
--- a/prelude/slang-cuda-prelude.h
+++ b/prelude/slang-cuda-prelude.h
@@ -205,11 +205,13 @@ typedef signed char int8_t;
 typedef short int16_t;
 typedef int int32_t;
 typedef long long int64_t;
+typedef ptrdiff_t intptr_t;
 
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
 typedef unsigned int uint32_t;
 typedef unsigned long long uint64_t;
+typedef size_t uintptr_t;
 
 #endif