diff --git a/include/pdh.h b/include/pdh.h
index 3aff6db..7018247 100644
--- a/include/pdh.h
+++ b/include/pdh.h
@@ -173,6 +173,7 @@
 #define    PdhAddEnglishCounter WINELIB_NAME_AW(PdhAddEnglishCounter)
 PDH_STATUS WINAPI PdhCloseQuery(PDH_HQUERY);
 PDH_STATUS WINAPI PdhCollectQueryData(PDH_HQUERY);
+PDH_STATUS WINAPI PdhCollectQueryDataEx(PDH_HQUERY, DWORD, HANDLE);
 PDH_STATUS WINAPI PdhCollectQueryDataWithTime(PDH_HQUERY,LONGLONG *);
 PDH_STATUS WINAPI PdhGetCounterInfoA(PDH_HCOUNTER, BOOLEAN, LPDWORD, PPDH_COUNTER_INFO_A);
 PDH_STATUS WINAPI PdhGetCounterInfoW(PDH_HCOUNTER, BOOLEAN, LPDWORD, PPDH_COUNTER_INFO_W);