diff --git a/chrome/content/zotero-platform/mac/itembox.css b/chrome/content/zotero-platform/mac/itembox.css
index 449e339c3f..25e1762426 100644
--- a/chrome/content/zotero-platform/mac/itembox.css
+++ b/chrome/content/zotero-platform/mac/itembox.css
@@ -33,6 +33,6 @@ textbox
 
 
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	.creator-type-label > image  { list-style-image: url('chrome://zotero/skin/mac/arrow-down@2x.png'); }
 }
diff --git a/chrome/content/zotero-platform/mac/overlay.css b/chrome/content/zotero-platform/mac/overlay.css
index 77dc2e371f..40b8890162 100644
--- a/chrome/content/zotero-platform/mac/overlay.css
+++ b/chrome/content/zotero-platform/mac/overlay.css
@@ -491,7 +491,7 @@ treechildren::-moz-tree-image {
 
 
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	.zotero-tb-button,.zotero-tb-button:first-child,.zotero-tb-button:last-child  { background: url("chrome://zotero/skin/mac/menubutton-end@2x.png") right center/auto 24px no-repeat; }
 	.zotero-tb-button > .toolbarbutton-icon  { background: url("chrome://zotero/skin/mac/menubutton-start@2x.png") left center/auto 24px no-repeat; }
 	.zotero-tb-button:-moz-window-inactive > .toolbarbutton-icon  { background: url("chrome://zotero/skin/mac/menubutton-start-inactive-window@2x.png") left center/auto 24px no-repeat; }
diff --git a/chrome/content/zotero-platform/unix/overlay.css b/chrome/content/zotero-platform/unix/overlay.css
index 94c8cb07ca..f4bff14f36 100644
--- a/chrome/content/zotero-platform/unix/overlay.css
+++ b/chrome/content/zotero-platform/unix/overlay.css
@@ -173,7 +173,7 @@ toolbar:not([id="nav-bar"]) #zotero-toolbar-buttons separator {
 }
 
 
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#zotero-pane .toolbarbutton-icon {
 		width: 16px;
 	}
diff --git a/chrome/content/zotero-platform/win/overlay.css b/chrome/content/zotero-platform/win/overlay.css
index ef62e1829b..0aa17feb82 100644
--- a/chrome/content/zotero-platform/win/overlay.css
+++ b/chrome/content/zotero-platform/win/overlay.css
@@ -191,7 +191,7 @@ toolbar:not([id="nav-bar"]) #zotero-toolbar-buttons separator {
 /* End toolbar buttons */
 
 
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#zotero-toolbar .toolbarbutton-icon {
 		width: 16px;
 	}
diff --git a/chrome/skin/default/zotero/bindings/attachmentbox.css b/chrome/skin/default/zotero/bindings/attachmentbox.css
index 3173584143..c4613ae936 100644
--- a/chrome/skin/default/zotero/bindings/attachmentbox.css
+++ b/chrome/skin/default/zotero/bindings/attachmentbox.css
@@ -24,7 +24,7 @@
 	list-style-image: url(chrome://zotero/skin/arrow_refresh.png);
 }
 
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#reindex {
 		list-style-image: url(chrome://zotero/skin/arrow_refresh@2x.png);
 		width: 20px;
diff --git a/chrome/skin/default/zotero/bindings/tagselector.css b/chrome/skin/default/zotero/bindings/tagselector.css
index 908c285013..bbab2dc419 100644
--- a/chrome/skin/default/zotero/bindings/tagselector.css
+++ b/chrome/skin/default/zotero/bindings/tagselector.css
@@ -96,6 +96,6 @@ toolbarbutton.zotero-clicky
 
 
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#view-settings-menu  { list-style-image: url(chrome://zotero/skin/tag-selector-menu@2x.png); }
 }
diff --git a/chrome/skin/default/zotero/overlay.css b/chrome/skin/default/zotero/overlay.css
index cca0feec3b..01c474e97e 100644
--- a/chrome/skin/default/zotero/overlay.css
+++ b/chrome/skin/default/zotero/overlay.css
@@ -70,7 +70,7 @@
 	width: 12px;
 }
 
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	.tree-columnpicker-icon {
 		list-style-image: url(chrome://zotero/skin/firefox/columnpicker@2x.gif);
 		width: 14px;
@@ -763,7 +763,7 @@
 
 
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#zotero-items-column-hasAttachment  { list-style-image: url(chrome://zotero/skin/attach-small@2x.png); }
 	#zotero-items-column-numNotes  { list-style-image: url(chrome://zotero/skin/treeitem-note-small@2x.png); }
 	.toolbarbutton-menu-dropmarker  { list-style-image: url('chrome://zotero/skin/searchbar-dropmarker@2x.png'); }
diff --git a/chrome/skin/default/zotero/zotero.css b/chrome/skin/default/zotero/zotero.css
index b14a97130c..ecf2e0e6ae 100644
--- a/chrome/skin/default/zotero/zotero.css
+++ b/chrome/skin/default/zotero/zotero.css
@@ -35,7 +35,7 @@
 	list-style-image: url("chrome://zotero-platform/content/zotero-z-16px-australis.png");
 }
 
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#zotero-toolbar-main-button,
 	#zotero-toolbar-main-button-single {
 		list-style-image: url("chrome://zotero-platform/content/zotero-z-32px-australis.png");
@@ -465,7 +465,7 @@ label.zotero-text-link {
 
 
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
-@media (min-resolution: 1.5dppx) {
+@media (min-resolution: 1.25dppx) {
 	#zotero-toolbar-save-button,#zotero-toolbar-save-button-single  { list-style-image: url("chrome://zotero/skin/treeitem-webpage@2x.png"); }
 	.zotero-clicky-minus  { background: url(chrome://zotero/skin/minus@2x.png) center/auto 18px no-repeat !important; }
 	.zotero-clicky-plus  { background: url(chrome://zotero/skin/plus@2x.png) center/auto 18px no-repeat !important; }