diff --git a/IPython/html/static/notebook/less/style.less b/IPython/html/static/notebook/less/style.less
index d37e342..27fc959 100644
--- a/IPython/html/static/notebook/less/style.less
+++ b/IPython/html/static/notebook/less/style.less
@@ -1,4 +1,4 @@
-@import "app.less";
+@import "style_noapp.less";
 
 @import "notebook.less";
 @import "celltoolbar.less";
diff --git a/IPython/html/static/notebook/less/app.less b/IPython/html/static/notebook/less/style_noapp.less
similarity index 100%
rename from IPython/html/static/notebook/less/app.less
rename to IPython/html/static/notebook/less/style_noapp.less
diff --git a/IPython/html/static/style/ipython.less b/IPython/html/static/style/ipython.less
index a1ac6f3..a6fa987 100644
--- a/IPython/html/static/style/ipython.less
+++ b/IPython/html/static/style/ipython.less
@@ -12,6 +12,6 @@
 @import "../tree/less/style.less";
 
 // notebook
-@import "../notebook/less/app.less";
+@import "../notebook/less/style_noapp.less";