diff --git a/vnc.c b/vnc.c
index aa4c38ac88..088f9cfac0 100644
--- a/vnc.c
+++ b/vnc.c
@@ -591,7 +591,7 @@ static void pointer_event(VncState *vs, int button_mask, int x, int y)
     }
 }
 
-static void key_event(VncState *vs, int down, uint32_t sym)
+static void do_key_event(VncState *vs, int down, uint32_t sym)
 {
     int keycode;
 
@@ -605,6 +605,13 @@ static void key_event(VncState *vs, int down, uint32_t sym)
 	kbd_put_keycode(keycode | 0x80);
 }
 
+static void key_event(VncState *vs, int down, uint32_t sym)
+{
+    if (sym >= 'A' && sym <= 'Z')
+	sym = sym - 'A' + 'a';
+    do_key_event(vs, down, sym);
+}
+
 static void framebuffer_update_request(VncState *vs, int incremental,
 				       int x_position, int y_position,
 				       int w, int h)