diff --git a/lib/ace/mode/eiffel_highlight_rules.js b/lib/ace/mode/eiffel_highlight_rules.js
index a95a4f37..a3ca8896 100644
--- a/lib/ace/mode/eiffel_highlight_rules.js
+++ b/lib/ace/mode/eiffel_highlight_rules.js
@@ -83,7 +83,7 @@ var EiffelHighlightRules = function() {
                 regex : /\b0(?:[xX][\da-fA-F](?:_*[\da-fA-F])*|[cC][0-7](?:_*[0-7])*|[bB][01](?:_*[01])*)\b/
             }, {
                 token : "constant.numeric",
-                regex : /(?:(?:\d(?:_*\d)*)?\.(?:(?:\d(?:_*\d)*)?[eE][+-]?)?\d(?:_*\d)*)|\d(?:_*\d)*\.?/
+                regex : /(?:\d(?:_*\d)*)?\.(?:(?:\d(?:_*\d)*)?[eE][+-]?)?\d(?:_*\d)*|\d(?:_*\d)*\.?/
             }, {
                 token : "paren.lparen",
                 regex : /[\[({]|<<|\|\(/