diff --git a/dlls/kernel32/process.c b/dlls/kernel32/process.c
index dcf4ce8d52c..9893181ae80 100644
--- a/dlls/kernel32/process.c
+++ b/dlls/kernel32/process.c
@@ -3141,7 +3141,7 @@ BOOL WINAPI IsWow64Process(HANDLE hProcess, PBOOL Wow64Process)
 #undef GetCurrentProcess
 HANDLE WINAPI GetCurrentProcess(void)
 {
-    return (HANDLE)0xffffffff;
+    return (HANDLE)~(ULONG_PTR)0;
 }
 
 /***********************************************************************
diff --git a/dlls/kernel32/thread.c b/dlls/kernel32/thread.c
index b5a37081f48..b08494371fe 100644
--- a/dlls/kernel32/thread.c
+++ b/dlls/kernel32/thread.c
@@ -557,7 +557,7 @@ VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 #undef GetCurrentThread
 HANDLE WINAPI GetCurrentThread(void)
 {
-    return (HANDLE)0xfffffffe;
+    return (HANDLE)~(ULONG_PTR)1;
 }
 
 
diff --git a/include/winbase.h b/include/winbase.h
index 714a6700f4c..6b19a4b2d0e 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -309,16 +309,16 @@ typedef struct _PROCESS_HEAP_ENTRY
 #define PROCESS_HEAP_ENTRY_MOVEABLE           0x0010
 #define PROCESS_HEAP_ENTRY_DDESHARE           0x0020
 
-#define INVALID_HANDLE_VALUE     ((HANDLE)~0UL)
-#define INVALID_FILE_SIZE        ((DWORD)~0UL)
-#define INVALID_SET_FILE_POINTER ((DWORD)~0UL)
-#define INVALID_FILE_ATTRIBUTES  ((DWORD)~0UL)
+#define INVALID_HANDLE_VALUE     ((HANDLE)~(ULONG_PTR)0)
+#define INVALID_FILE_SIZE        (~0u)
+#define INVALID_SET_FILE_POINTER (~0u)
+#define INVALID_FILE_ATTRIBUTES  (~0u)
 
 #define LOCKFILE_FAIL_IMMEDIATELY   1
 #define LOCKFILE_EXCLUSIVE_LOCK     2
 
-#define FLS_OUT_OF_INDEXES ((DWORD)~0UL)
-#define TLS_OUT_OF_INDEXES ((DWORD)~0UL)
+#define FLS_OUT_OF_INDEXES (~0u)
+#define TLS_OUT_OF_INDEXES (~0u)
 
 #define SHUTDOWN_NORETRY 1
 
@@ -2436,8 +2436,8 @@ static inline PVOID WINAPI InterlockedExchangePointer( PVOID volatile *dest, PVO
 }
 
 #ifdef __WINESRC__
-#define GetCurrentProcess() ((HANDLE)0xffffffff)
-#define GetCurrentThread()  ((HANDLE)0xfffffffe)
+#define GetCurrentProcess() ((HANDLE)~(ULONG_PTR)0)
+#define GetCurrentThread()  ((HANDLE)~(ULONG_PTR)1)
 #endif
 
 /* WinMain(entry point) must be declared in winbase.h. */
diff --git a/include/wine/test.h b/include/wine/test.h
index 62d8c3addcc..caa3f35a699 100644
--- a/include/wine/test.h
+++ b/include/wine/test.h
@@ -40,10 +40,10 @@
 #endif
 
 #ifndef INVALID_FILE_ATTRIBUTES
-#define INVALID_FILE_ATTRIBUTES  ((DWORD)~0UL)
+#define INVALID_FILE_ATTRIBUTES  (~0u)
 #endif
 #ifndef INVALID_SET_FILE_POINTER
-#define INVALID_SET_FILE_POINTER ((DWORD)~0UL)
+#define INVALID_SET_FILE_POINTER (~0u)
 #endif
 
 /* debug level */
diff --git a/include/wingdi.h b/include/wingdi.h
index e7be055261e..ac4ba2bff86 100644
--- a/include/wingdi.h
+++ b/include/wingdi.h
@@ -3253,8 +3253,8 @@ typedef struct _BLENDFUNCTION
 #define GRADIENT_FILL_TRIANGLE    0x00000002
 #define GRADIENT_FILL_OP_FLAG     0x000000ff
 
-#define GDI_ERROR                               (0xFFFFFFFFL)
-#define HGDI_ERROR                              ((HANDLE)0xFFFFFFFFL)
+#define GDI_ERROR                               (~0u)
+#define HGDI_ERROR                              ((HANDLE)~(ULONG_PTR)0)
 
 /* AddFontResourceEx flags */
 #define FR_PRIVATE  0x10