diff --git a/tools/winapi/win32.api b/tools/winapi/win32.api
index c3c33d898c2..b9fe3cb984a 100644
--- a/tools/winapi/win32.api
+++ b/tools/winapi/win32.api
@@ -3731,6 +3731,42 @@ LPCSTR
 
 void
 
+%%pdh.dll
+
+%long
+
+BOOLEAN
+DWORD
+LONG
+PDH_HCOUNTER
+PDH_HQUERY
+PDH_STATUS
+
+%long --pointer
+
+DWORD_PTR
+
+%ptr
+
+LONGLONG *
+LPDWORD
+PDH_HCOUNTER *
+PDH_HQUERY *
+PPDH_COUNTER_INFO_A
+PPDH_COUNTER_INFO_W
+PPDH_FMT_COUNTERVALUE
+PPDH_RAW_COUNTER
+
+%str
+
+LPCSTR
+LPSTR
+
+%wstr
+
+LPCWSTR
+LPWSTR
+
 %%powrprof.dll
 
 %long