diff --git a/labscore/utils/markdown.js b/labscore/utils/markdown.js
index 28e4a45..ffb16be 100644
--- a/labscore/utils/markdown.js
+++ b/labscore/utils/markdown.js
@@ -19,7 +19,7 @@ function _icon(icon){
   if(ICONS[icon]) i = ICONS[icon];
   if(ICONS_NEXTGEN[icon]) i = ICONS_NEXTGEN[icon];
 
-  return i.replace(/:[a-z1-9_]*:/, ':i:');
+  return i.replace(/:[a-z0-9_]*:/, ':i:');
 }
 
 // Ensures potentially user-provided content won't escape pill components