diff --git a/source/vibe/internal/freelistref.d b/source/vibe/internal/freelistref.d
index d0799ce..81b0924 100644
--- a/source/vibe/internal/freelistref.d
+++ b/source/vibe/internal/freelistref.d
@@ -17,7 +17,6 @@ import core.exception : OutOfMemoryError;
 import core.stdc.stdlib;
 import core.memory;
 import std.conv;
-import std.exception : enforceEx;
 import std.traits;
 import std.algorithm;