diff --git a/dlls/comdlg32/printdlg.c b/dlls/comdlg32/printdlg.c
index e3b89eaf965..3c3fab3d713 100644
--- a/dlls/comdlg32/printdlg.c
+++ b/dlls/comdlg32/printdlg.c
@@ -3987,7 +3987,7 @@ struct callback_data
     IObjectWithSite *object;
 };
 
-static UINT CALLBACK pdlgex_hook_proc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+static UINT_PTR CALLBACK pdlgex_hook_proc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
 {
     if (msg == WM_INITDIALOG)
     {
diff --git a/include/commdlg.h b/include/commdlg.h
index db5aaaa8225..df56c143c08 100644
--- a/include/commdlg.h
+++ b/include/commdlg.h
@@ -531,8 +531,8 @@ static const WCHAR HELPMSGSTRINGW[] = { 'c','o','m','m','d','l','g','_',
         (void)SNDMSG(_hdlg, CDM_SETDEFEXT, 0, (LPARAM)(LPSTR)_pszext)
 
 
-typedef UINT (CALLBACK *LPPRINTHOOKPROC) (HWND, UINT, WPARAM, LPARAM);
-typedef UINT (CALLBACK *LPSETUPHOOKPROC) (HWND, UINT, WPARAM, LPARAM);
+typedef UINT_PTR (CALLBACK *LPPRINTHOOKPROC) (HWND, UINT, WPARAM, LPARAM);
+typedef UINT_PTR (CALLBACK *LPSETUPHOOKPROC) (HWND, UINT, WPARAM, LPARAM);
 
 typedef struct tagPDA
 {