diff --git a/reactos/base/applications/taskmgr/applpage.c b/reactos/base/applications/taskmgr/applpage.c
index 7cc5fe91e3e..eff4d253956 100644
--- a/reactos/base/applications/taskmgr/applpage.c
+++ b/reactos/base/applications/taskmgr/applpage.c
@@ -184,21 +184,21 @@ ApplicationPageWndProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
         InvalidateRect(hApplicationPageListCtrl, NULL, TRUE);
 
         GetClientRect(hApplicationPageEndTaskButton, &rc);
-        MapWindowPoints(hApplicationPageEndTaskButton, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)) );
+        MapWindowPoints(hApplicationPageEndTaskButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
         cx = rc.left + nXDifference;
         cy = rc.top + nYDifference;
         SetWindowPos(hApplicationPageEndTaskButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
         InvalidateRect(hApplicationPageEndTaskButton, NULL, TRUE);
 
         GetClientRect(hApplicationPageSwitchToButton, &rc);
-        MapWindowPoints(hApplicationPageSwitchToButton, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)) );
+        MapWindowPoints(hApplicationPageSwitchToButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
         cx = rc.left + nXDifference;
         cy = rc.top + nYDifference;
         SetWindowPos(hApplicationPageSwitchToButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
         InvalidateRect(hApplicationPageSwitchToButton, NULL, TRUE);
 
         GetClientRect(hApplicationPageNewTaskButton, &rc);
-        MapWindowPoints(hApplicationPageNewTaskButton, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)) );
+        MapWindowPoints(hApplicationPageNewTaskButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
         cx = rc.left + nXDifference;
         cy = rc.top + nYDifference;
         SetWindowPos(hApplicationPageNewTaskButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
diff --git a/reactos/base/applications/taskmgr/perfpage.c b/reactos/base/applications/taskmgr/perfpage.c
index 3359c2e56d3..5aaba2bc5eb 100644
--- a/reactos/base/applications/taskmgr/perfpage.c
+++ b/reactos/base/applications/taskmgr/perfpage.c
@@ -67,7 +67,7 @@ void AdjustFrameSize(HWND hCntrl, HWND hDlg, int nXDifference, int nYDifference,
     int   cx, cy, sx, sy;
 
     GetClientRect(hCntrl, &rc);
-    MapWindowPoints(hCntrl, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)));
+    MapWindowPoints(hCntrl, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
     if (pos) {
         cx = rc.left;
         cy = rc.top;
diff --git a/reactos/base/applications/taskmgr/procpage.c b/reactos/base/applications/taskmgr/procpage.c
index 007e678532d..830f83e3cfe 100644
--- a/reactos/base/applications/taskmgr/procpage.c
+++ b/reactos/base/applications/taskmgr/procpage.c
@@ -186,14 +186,14 @@ ProcessPageWndProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
         InvalidateRect(hProcessPageListCtrl, NULL, TRUE);
 
         GetClientRect(hProcessPageEndProcessButton, &rc);
-        MapWindowPoints(hProcessPageEndProcessButton, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)) );
+        MapWindowPoints(hProcessPageEndProcessButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
            cx = rc.left + nXDifference;
         cy = rc.top + nYDifference;
         SetWindowPos(hProcessPageEndProcessButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
         InvalidateRect(hProcessPageEndProcessButton, NULL, TRUE);
 
         GetClientRect(hProcessPageShowAllProcessesButton, &rc);
-        MapWindowPoints(hProcessPageShowAllProcessesButton, hDlg, (LPPOINT)(PRECT)(&rc), (sizeof(RECT)/sizeof(POINT)) );
+        MapWindowPoints(hProcessPageShowAllProcessesButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
            cx = rc.left;
         cy = rc.top + nYDifference;
         SetWindowPos(hProcessPageShowAllProcessesButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);