diff --git a/customize.dist/src/less/cryptpad.less b/customize.dist/src/less/cryptpad.less
index e7f81db51..ca1fab6c5 100644
--- a/customize.dist/src/less/cryptpad.less
+++ b/customize.dist/src/less/cryptpad.less
@@ -13,7 +13,7 @@
 
 @toolbar-green: #5cb85c;
 
-.font-open-sans();
+.font_open-sans();
 
 .alertify_main();
 
diff --git a/customize.dist/src/less2/include/font.less b/customize.dist/src/less2/include/font.less
index adb5c844f..b1fdd0b19 100644
--- a/customize.dist/src/less2/include/font.less
+++ b/customize.dist/src/less2/include/font.less
@@ -1,9 +1,9 @@
-.font-neuropolitical () {
+.font_neuropolitical () {
     @font-face {
         font-family: Neuropolitical;
         src: url(./customize/fonts/neuropolitical.ttf)
     }
 }
-.font-open-sans () {
+.font_open-sans () {
     @import (once) '/customize/fonts/open-sans.less';
 }
diff --git a/customize.dist/src/less2/main.less b/customize.dist/src/less2/main.less
index b26394425..3cab13fbb 100644
--- a/customize.dist/src/less2/main.less
+++ b/customize.dist/src/less2/main.less
@@ -1,6 +1,6 @@
 @import (once) './include/font.less';
-.font-neuropolitical();
-.font-open-sans();
+.font_neuropolitical();
+.font_open-sans();
 
 body.cp-page-index { @import "./pages/page-index.less"; }
 body.cp-page-contact { @import "./pages/page-contact.less"; }