diff --git a/chrome/content/zotero/reader.xul b/chrome/content/zotero/reader.xul
index ed97d30381..dddd4d99ac 100644
--- a/chrome/content/zotero/reader.xul
+++ b/chrome/content/zotero/reader.xul
@@ -82,12 +82,12 @@
 						label="&zotero.pdfReader.rotatePageRight;"
 						oncommand="menuCmd('rotateRight')"
 				/>
-				<menuitem
+				<!--<menuitem
 						id="edit-menuitem-rotate-180"
 						class="menu-type-reader"
 						label="&zotero.pdfReader.rotatePage180;"
 						oncommand="menuCmd('rotate180')"
-				/>
+				/>-->
 			</menupopup>
 		</menu>
 		<menu label="View" onpopupshowing="onViewMenuOpen()">
diff --git a/chrome/content/zotero/standalone/standalone.xul b/chrome/content/zotero/standalone/standalone.xul
index f15d595463..7b539def9f 100644
--- a/chrome/content/zotero/standalone/standalone.xul
+++ b/chrome/content/zotero/standalone/standalone.xul
@@ -245,12 +245,12 @@
 									label="&zotero.pdfReader.rotatePageRight;"
 									oncommand="ZoteroStandalone.onReaderCmd('rotateRight')"
 							/>
-							<menuitem
+							<!--<menuitem
 									id="edit-menuitem-rotate-180"
 									class="menu-type-reader"
 									label="&zotero.pdfReader.rotatePage180;"
 									oncommand="ZoteroStandalone.onReaderCmd('rotate180')"
-							/>
+							/>-->
 						</menupopup>
 					</menu>