diff --git a/src/aptus/web/static/aptus.js b/src/aptus/web/static/aptus.js
index 2ca4660..f027299 100644
--- a/src/aptus/web/static/aptus.js
+++ b/src/aptus/web/static/aptus.js
@@ -345,7 +345,7 @@ const App = {
         const dy = movedto.y - this.rubstart.y;
         if (!this.mouse_dragging && Math.abs(dx) + Math.abs(dy) > 5) {
             this.mouse_dragging = true;
-            this.set_moving(this.mouse_shift);
+            this.set_moving(!this.mouse_shift);
         }
         clear_canvas(view.overlay_canvas);
         if (this.mouse_dragging) {
diff --git a/src/aptus/web/templates/mainpage.html b/src/aptus/web/templates/mainpage.html
index d7ff6da..ed41887 100644
--- a/src/aptus/web/templates/mainpage.html
+++ b/src/aptus/web/templates/mainpage.html
@@ -57,8 +57,8 @@
         <p>
         <b>click</b>: zoom in {{altnote}}<br/>
         <b>shift-click</b>: zoom out {{altnote}}<br/>
-        <b>click-drag</b>: select new viewing rectangle<br/>
-        <b>shift-click-drag</b>: pan the view<br/>
+        <b>click-drag</b>: pan the view<br/>
+        <b>shift-click-drag</b>: select new viewing rectangle<br/>
         <br/>
         {{altnote}} +{{alt}}: just a little<br/>
         </p>