diff --git a/themes/atom-dark-syntax.less b/themes/atom-dark-syntax.less
index 329e317e6..97759cc3d 100644
--- a/themes/atom-dark-syntax.less
+++ b/themes/atom-dark-syntax.less
@@ -32,7 +32,7 @@
     background-color: rgba(255, 255, 255, 0.14);
   }
 
-  /* Markdown Styles */
+  // Markdown Styles
 
   .source.gfm {
     color: #999;
diff --git a/themes/atom-light-syntax.less b/themes/atom-light-syntax.less
index 50dd13bde..874069295 100644
--- a/themes/atom-light-syntax.less
+++ b/themes/atom-light-syntax.less
@@ -79,7 +79,7 @@
     }
   }
 
-  /* Keywords */
+  // Keywords
   .keyword {
     color: #222;
     font-weight: bold;
@@ -180,7 +180,7 @@
     }
   }
 
-  /* CSS Styles */
+  // CSS Styles
   .css {
     &.support.property-name {
       font-weight: bold;
@@ -192,7 +192,7 @@
     }
   }
 
-  /* Markdown */
+  // Markdown
   .source.gfm {
     color: #444;
   }