diff --git a/src/Windows/Perspex.Win32/Input/KeyInterop.cs b/src/Windows/Perspex.Win32/Input/KeyInterop.cs
index 658313a27b..40289caac9 100644
--- a/src/Windows/Perspex.Win32/Input/KeyInterop.cs
+++ b/src/Windows/Perspex.Win32/Input/KeyInterop.cs
@@ -195,6 +195,8 @@ namespace Perspex.Win32.Input
             { 9, Key.Tab },
             { 12, Key.Clear },
             { 13, Key.Return },
+            { 16, Key.LeftShift},
+            { 17, Key.LeftCtrl},
             { 18, Key.LeftAlt },
             { 19, Key.Pause },
             { 20, Key.Capital },