diff --git a/dlls/mshtml/pluginhost.c b/dlls/mshtml/pluginhost.c
index 712f7e0dd4d..0fbbf6c1c06 100644
--- a/dlls/mshtml/pluginhost.c
+++ b/dlls/mshtml/pluginhost.c
@@ -311,7 +311,7 @@ void update_plugin_window(PluginHost *host, HWND hwnd, const RECT *rect)
 
     TRACE("%p %s\n", hwnd, wine_dbgstr_rect(rect));
 
-    if(memcmp(rect, &host->rect, sizeof(RECT))) {
+    if(!EqualRect(rect, &host->rect)) {
         host->rect = *rect;
         rect_changed = TRUE;
     }
diff --git a/dlls/mshtml/view.c b/dlls/mshtml/view.c
index 2a55938237b..15f39f47717 100644
--- a/dlls/mshtml/view.c
+++ b/dlls/mshtml/view.c
@@ -507,7 +507,7 @@ static HRESULT WINAPI OleDocumentView_SetRect(IOleDocumentView *iface, LPRECT pr
 
     if(This->doc_obj->hwnd) {
         GetClientRect(This->doc_obj->hwnd, &rect);
-        if(memcmp(prcView, &rect, sizeof(RECT))) {
+        if(!EqualRect(prcView, &rect)) {
             InvalidateRect(This->doc_obj->hwnd, NULL, TRUE);
             SetWindowPos(This->doc_obj->hwnd, NULL, prcView->left, prcView->top, prcView->right,
                     prcView->bottom, SWP_NOZORDER | SWP_NOACTIVATE);