diff --git a/Cocoa/Document.m b/Cocoa/Document.m
index 2984932..8059de7 100644
--- a/Cocoa/Document.m
+++ b/Cocoa/Document.m
@@ -1195,6 +1195,7 @@ static void printImage(GB_gameboy_t *gb, uint32_t *image, uint8_t height,
 - (IBAction)showVRAMViewer:(id)sender
 {
     [self.vramWindow makeKeyAndOrderFront:sender];
+    [self reloadVRAMData: nil];
 }
 
 - (void) printImage:(uint32_t *)imageBytes height:(unsigned) height