diff --git a/include/dbghelp.h b/include/dbghelp.h
index b7bdb0f6000..9afaa90a28d 100644
--- a/include/dbghelp.h
+++ b/include/dbghelp.h
@@ -754,11 +754,11 @@ BOOL WINAPI MiniDumpReadDumpStream(PVOID, ULONG, PMINIDUMP_DIRECTORY*, PVOID*,
 #define SLMFLAG_VIRTUAL         0x1
 #define SLMFLAG_NO_SYMBOLS      0x4
 
-typedef BOOL (CALLBACK *PENUMLOADED_MODULES_CALLBACK)(PSTR, DWORD, ULONG, PVOID);
+typedef BOOL (CALLBACK *PENUMLOADED_MODULES_CALLBACK)(PSTR, ULONG, ULONG, PVOID);
 BOOL   WINAPI EnumerateLoadedModules(HANDLE, PENUMLOADED_MODULES_CALLBACK, PVOID);
-typedef BOOL (CALLBACK *PENUMLOADED_MODULES_CALLBACK64)(PSTR, DWORD, ULONG64, PVOID);
+typedef BOOL (CALLBACK *PENUMLOADED_MODULES_CALLBACK64)(PSTR, DWORD64, ULONG, PVOID);
 BOOL   WINAPI EnumerateLoadedModules64(HANDLE, PENUMLOADED_MODULES_CALLBACK64, PVOID);
-typedef BOOL (CALLBACK *PSYM_ENUMMODULES_CALLBACK)(PSTR, DWORD, PVOID);
+typedef BOOL (CALLBACK *PSYM_ENUMMODULES_CALLBACK)(PSTR, ULONG, PVOID);
 BOOL    WINAPI SymEnumerateModules(HANDLE, PSYM_ENUMMODULES_CALLBACK, PVOID);
 typedef BOOL (CALLBACK *PSYM_ENUMMODULES_CALLBACK64)(PSTR, DWORD64, PVOID);
 BOOL    WINAPI SymEnumerateModules64(HANDLE, PSYM_ENUMMODULES_CALLBACK64, PVOID);