diff --git a/src/archive/meson.build b/src/archive/meson.build
index e2f45f8e6..c40b7b272 100644
--- a/src/archive/meson.build
+++ b/src/archive/meson.build
@@ -18,7 +18,6 @@ endif
 
 archive_glue = static_library(
   'archive_glue',
-  'ArchiveLookup.cxx',
   'ArchivePlugin.cxx',
   '../input/plugins/ArchiveInputPlugin.cxx',
   include_directories: inc,
diff --git a/src/archive/ArchiveLookup.cxx b/src/fs/LookupFile.cxx
similarity index 95%
rename from src/archive/ArchiveLookup.cxx
rename to src/fs/LookupFile.cxx
index e9227c913..9cee68262 100644
--- a/src/archive/ArchiveLookup.cxx
+++ b/src/fs/LookupFile.cxx
@@ -17,8 +17,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "ArchiveLookup.hxx"
-#include "fs/FileInfo.hxx"
+#include "LookupFile.hxx"
+#include "FileInfo.hxx"
 #include "system/Error.hxx"
 
 gcc_pure
@@ -33,7 +33,7 @@ FindSlash(PathTraitsFS::pointer_type p, size_t i) noexcept
 }
 
 ArchiveLookupResult
-archive_lookup(Path pathname)
+LookupFile(Path pathname)
 {
 	PathTraitsFS::string buffer(pathname.c_str());
 	size_t idx = buffer.size();
diff --git a/src/archive/ArchiveLookup.hxx b/src/fs/LookupFile.hxx
similarity index 93%
rename from src/archive/ArchiveLookup.hxx
rename to src/fs/LookupFile.hxx
index 6166dd3ca..80fc1bf39 100644
--- a/src/archive/ArchiveLookup.hxx
+++ b/src/fs/LookupFile.hxx
@@ -17,10 +17,10 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef MPD_ARCHIVE_LOOKUP_HXX
-#define MPD_ARCHIVE_LOOKUP_HXX
+#ifndef MPD_LOOKUP_FILE_HXX
+#define MPD_LOOKUP_FILE_HXX
 
-#include "fs/AllocatedPath.hxx"
+#include "AllocatedPath.hxx"
 
 struct ArchiveLookupResult {
 	AllocatedPath archive = nullptr;
@@ -50,7 +50,7 @@ struct ArchiveLookupResult {
  * Throws on error.
  */
 ArchiveLookupResult
-archive_lookup(Path pathname);
+LookupFile(Path pathname);
 
 #endif
 
diff --git a/src/fs/meson.build b/src/fs/meson.build
index 201d446a2..8e49728cd 100644
--- a/src/fs/meson.build
+++ b/src/fs/meson.build
@@ -10,6 +10,7 @@ fs_sources = [
   'List.cxx',
   'StandardDirectory.cxx',
   'CheckFile.cxx',
+  'LookupFile.cxx',
   'DirectoryReader.cxx',
   'io/PeekReader.cxx',
   'io/FileReader.cxx',
diff --git a/src/input/plugins/ArchiveInputPlugin.cxx b/src/input/plugins/ArchiveInputPlugin.cxx
index 769b67c58..d8b5e754f 100644
--- a/src/input/plugins/ArchiveInputPlugin.cxx
+++ b/src/input/plugins/ArchiveInputPlugin.cxx
@@ -18,11 +18,11 @@
  */
 
 #include "ArchiveInputPlugin.hxx"
-#include "archive/ArchiveLookup.hxx"
 #include "archive/ArchiveList.hxx"
 #include "archive/ArchivePlugin.hxx"
 #include "archive/ArchiveFile.hxx"
 #include "../InputStream.hxx"
+#include "fs/LookupFile.hxx"
 #include "fs/Path.hxx"
 #include "Log.hxx"
 
@@ -31,10 +31,9 @@ OpenArchiveInputStream(Path path, Mutex &mutex)
 {
 	const ArchivePlugin *arplug;
 
-	// archive_lookup will modify pname when true is returned
 	ArchiveLookupResult l;
 	try {
-		l = archive_lookup(path);
+		l = LookupFile(path);
 		if (l.archive.IsNull()) {
 			return nullptr;
 		}
diff --git a/test/TestLookupFile.cxx b/test/TestLookupFile.cxx
new file mode 100644
index 000000000..be6d85cfb
--- /dev/null
+++ b/test/TestLookupFile.cxx
@@ -0,0 +1,30 @@
+#include "fs/LookupFile.hxx"
+#include "util/Compiler.h"
+
+#include <gtest/gtest.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+TEST(ArchiveTest, Lookup)
+{
+	EXPECT_THROW(LookupFile(Path::FromFS("")), std::system_error);
+
+	EXPECT_FALSE(LookupFile(Path::FromFS(".")));
+
+	EXPECT_FALSE(LookupFile(Path::FromFS("config.h")));
+
+	EXPECT_THROW(LookupFile(Path::FromFS("src/foo/bar")), std::system_error);
+
+	fclose(fopen("dummy", "w"));
+
+	auto result = LookupFile(Path::FromFS("dummy/foo/bar"));
+	EXPECT_TRUE(result);
+	EXPECT_STREQ(result.archive.c_str(), "dummy");
+	EXPECT_STREQ(result.inside.c_str(), "foo/bar");
+
+	result = LookupFile(Path::FromFS("config.h/foo/bar"));
+	EXPECT_TRUE(result);
+	EXPECT_STREQ(result.archive.c_str(), "config.h");
+	EXPECT_STREQ(result.inside.c_str(), "foo/bar");
+}
diff --git a/test/meson.build b/test/meson.build
index 731ad2cec..7b4325322 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -92,6 +92,9 @@ test('test_queue_priority', executable(
 test('TestFs', executable(
   'TestFs',
   'TestFs.cxx',
+  'TestLookupFile.cxx',
+  '../src/Log.cxx',
+  '../src/LogBackend.cxx',
   include_directories: inc,
   dependencies: [
     fs_dep,
@@ -339,18 +342,6 @@ endif
 #
 
 if archive_glue_dep.found()
-  test('test_archive', executable(
-    'test_archive',
-    'test_archive.cxx',
-    '../src/Log.cxx',
-    '../src/LogBackend.cxx',
-    include_directories: inc,
-    dependencies: [
-      archive_glue_dep,
-      gtest_dep,
-    ],
-  ))
-
   executable(
     'visit_archive',
     'visit_archive.cxx',
diff --git a/test/test_archive.cxx b/test/test_archive.cxx
deleted file mode 100644
index 55e655b21..000000000
--- a/test/test_archive.cxx
+++ /dev/null
@@ -1,30 +0,0 @@
-#include "archive/ArchiveLookup.hxx"
-#include "util/Compiler.h"
-
-#include <gtest/gtest.h>
-
-#include <string.h>
-#include <stdlib.h>
-
-TEST(ArchiveTest, Lookup)
-{
-	EXPECT_THROW(archive_lookup(Path::FromFS("")), std::system_error);
-
-	EXPECT_FALSE(archive_lookup(Path::FromFS(".")));
-
-	EXPECT_FALSE(archive_lookup(Path::FromFS("config.h")));
-
-	EXPECT_THROW(archive_lookup(Path::FromFS("src/foo/bar")), std::system_error);
-
-	fclose(fopen("dummy", "w"));
-
-	auto result = archive_lookup(Path::FromFS("dummy/foo/bar"));
-	EXPECT_TRUE(result);
-	EXPECT_STREQ(result.archive.c_str(), "dummy");
-	EXPECT_STREQ(result.inside.c_str(), "foo/bar");
-
-	result = archive_lookup(Path::FromFS("config.h/foo/bar"));
-	EXPECT_TRUE(result);
-	EXPECT_STREQ(result.archive.c_str(), "config.h");
-	EXPECT_STREQ(result.inside.c_str(), "foo/bar");
-}