diff --git a/Ample/AppDelegate.m b/Ample/AppDelegate.m
index ee1d4dd..51e75c7 100644
--- a/Ample/AppDelegate.m
+++ b/Ample/AppDelegate.m
@@ -184,5 +184,11 @@
     NSWorkspace *ws = [NSWorkspace sharedWorkspace];
     [ws openURL: url];
 }
+- (IBAction)mameDocumentation:(id)sender {
+    NSWorkspace *ws = [NSWorkspace sharedWorkspace];
+    
+    NSURL *url = [NSURL URLWithString: @"https://docs.mamedev.org"];
+    [ws openURL: url];
+}
 
 @end
diff --git a/Ample/Base.lproj/MainMenu.xib b/Ample/Base.lproj/MainMenu.xib
index 368baa3..4e780ef 100644
--- a/Ample/Base.lproj/MainMenu.xib
+++ b/Ample/Base.lproj/MainMenu.xib
@@ -436,6 +436,12 @@
                                     <action selector="showHelp:" target="-1" id="y7X-2Q-9no"/>
                                 </connections>
                             </menuItem>
+                            <menuItem title="MAME Documentation" id="1IW-V0-UWA">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="mameDocumentation:" target="Voe-Tx-rLC" id="K8T-nZ-c5J"/>
+                                </connections>
+                            </menuItem>
                         </items>
                     </menu>
                 </menuItem>