diff --git a/src/Interpreters/Cache/FileSegment.cpp b/src/Interpreters/Cache/FileSegment.cpp
index 94697b7a011..6d405ef24cb 100644
--- a/src/Interpreters/Cache/FileSegment.cpp
+++ b/src/Interpreters/Cache/FileSegment.cpp
@@ -11,11 +11,6 @@
 
 #include <magic_enum.hpp>
 
-namespace CurrentMetrics
-{
-extern const Metric CacheDetachedFileSegments;
-}
-
 namespace DB
 {