diff --git a/changed.d b/changed.d
index 3cd9d55..5012b45 100755
--- a/changed.d
+++ b/changed.d
@@ -74,7 +74,7 @@ auto getIssues(string revRange)
     import std.regex : ctRegex, match, splitter;
 
     // see https://github.com/github/github-services/blob/2e886f407696261bd5adfc99b16d36d5e7b50241/lib/services/bugzilla.rb#L155
-    enum closedRE = ctRegex!(`((close|fix|address)e?(s|d)? )?(ticket|bug|tracker item|issue)s?:? *([\d ,\+&#and]+)`, "i");
+    static const closedRE = ctRegex!(`((close|fix|address)e?(s|d)? )?(ticket|bug|tracker item|issue)s?:? *([\d ,\+&#and]+)`, "i");
 
     auto issues = appender!(int[]);
     foreach (repo; ["dmd", "druntime", "phobos", "dlang.org", "tools", "installer"]