diff --git a/win32ss/printing/base/winspool/printers.c b/win32ss/printing/base/winspool/printers.c
index 28bce50202..72f10bc684 100644
--- a/win32ss/printing/base/winspool/printers.c
+++ b/win32ss/printing/base/winspool/printers.c
@@ -580,6 +580,7 @@ BOOL WINAPI
 GetPrinterA(HANDLE hPrinter, DWORD Level, LPBYTE pPrinter, DWORD cbBuf, LPDWORD pcbNeeded)
 {
     TRACE("GetPrinterA(%p, %lu, %p, %lu, %p)\n", hPrinter, Level, pPrinter, cbBuf, pcbNeeded);
+    *pcbNeeded = 0;
     return FALSE;
 }
 
@@ -587,6 +588,7 @@ BOOL WINAPI
 GetPrinterDriverA(HANDLE hPrinter, LPSTR pEnvironment, DWORD Level, LPBYTE pDriverInfo, DWORD cbBuf, LPDWORD pcbNeeded)
 {
     TRACE("GetPrinterDriverA(%p, %s, %lu, %p, %lu, %p)\n", hPrinter, pEnvironment, Level, pDriverInfo, cbBuf, pcbNeeded);
+    *pcbNeeded = 0;
     return FALSE;
 }