diff --git a/chrome/content/zotero/overlay.xul b/chrome/content/zotero/overlay.xul
index 61091ca1e3..c77b4bdfc8 100644
--- a/chrome/content/zotero/overlay.xul
+++ b/chrome/content/zotero/overlay.xul
@@ -94,6 +94,6 @@
 		<key id="key_openZotero"
 			 key="Z" 
 			 oncommand="ZoteroOverlay.toggleDisplay();"
-			 modifiers="accel alt" />
+			 modifiers="accel shift" />
 	</keyset>
 </overlay>
diff --git a/chrome/content/zotero/preferences/preferences_keys.js b/chrome/content/zotero/preferences/preferences_keys.js
index 3c544cd757..748f05adc2 100644
--- a/chrome/content/zotero/preferences/preferences_keys.js
+++ b/chrome/content/zotero/preferences/preferences_keys.js
@@ -30,7 +30,7 @@ Zotero_Preferences.Keys = {
 		// Display the appropriate modifier keys for the platform
 		var rows = document.getElementById('zotero-prefpane-keys').getElementsByTagName('row');
 		for (var i=0; i<rows.length; i++) {
-			rows[i].firstChild.nextSibling.value = Zotero.isMac ? 'Cmd+Shift+' : 'Ctrl+Alt+';
+			rows[i].firstChild.nextSibling.value = Zotero.isMac ? 'Cmd+Shift+' : 'Ctrl+Shift+';
 		}
 	}
 };
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 80c8d1e6fd..4cdefbc85f 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -2307,20 +2307,16 @@ Zotero.Keys = new function() {
 	 * Called by ZoteroPane.onLoad()
 	 */
 	function windowInit(document) {
-		var useShift = Zotero.isMac;
-		
 		// Zotero pane shortcut
 		var keyElem = document.getElementById('key_openZotero');
 		if(keyElem) {
 			var zKey = Zotero.Prefs.get('keys.openZotero');
-			// Only override the default with the pref if the <key> hasn't been manually changed
-			// and the pref has been
-			if (keyElem.getAttribute('key') == 'Z' && keyElem.getAttribute('modifiers') == 'accel alt'
-					&& (zKey != 'Z' || useShift)) {
+			// Only override the default with the pref if the <key> hasn't
+			// been manually changed and the pref has been
+			if (keyElem.getAttribute('key') == 'Z'
+					&& keyElem.getAttribute('modifiers') == 'accel shift'
+					&& zKey != 'Z') {
 				keyElem.setAttribute('key', zKey);
-				if (useShift) {
-					keyElem.setAttribute('modifiers', 'accel shift');
-				}
 			}
 		}
 	}
diff --git a/chrome/content/zotero/zoteroPane.js b/chrome/content/zotero/zoteroPane.js
index 6117e958be..2cd3bed8a3 100644
--- a/chrome/content/zotero/zoteroPane.js
+++ b/chrome/content/zotero/zoteroPane.js
@@ -602,17 +602,14 @@ var ZoteroPane = new function()
 			}
 		}
 		
-		var useShift = Zotero.isMac;
-		
 		var key = String.fromCharCode(event.which);
 		if (!key) {
 			Zotero.debug('No key');
 			return;
 		}
 		
-		// Ignore modifiers other than Ctrl-Alt or Cmd-Shift
-		if (!((Zotero.isMac ? event.metaKey : event.ctrlKey) &&
-				(useShift ? event.shiftKey : event.altKey))) {
+		// Ignore modifiers other than Ctrl-Shift/Cmd-Shift
+		if (!((Zotero.isMac ? event.metaKey : event.ctrlKey) && event.shiftKey)) {
 			return;
 		}
 		
@@ -687,9 +684,7 @@ var ZoteroPane = new function()
 						}
 					}
 					// Use key that's not the modifier as the popup toggle
-					ZoteroPane_Local.newNote(
-						useShift ? event.altKey : event.shiftKey, parent
-					);
+					ZoteroPane_Local.newNote(event.altKey, parent);
 					break;
 				case 'toggleTagSelector':
 					ZoteroPane_Local.toggleTagSelector();