diff --git a/src/libfetchers/git.cc b/src/libfetchers/git.cc
index f7c4e6d5bbd..8d4d9abcc66 100644
--- a/src/libfetchers/git.cc
+++ b/src/libfetchers/git.cc
@@ -9,7 +9,6 @@
 #include "pathlocks.hh"
 #include "processes.hh"
 #include "git.hh"
-#include "mounted-source-accessor.hh"
 #include "git-utils.hh"
 #include "logging.hh"
 #include "finally.hh"
diff --git a/src/libfetchers/meson.build b/src/libfetchers/meson.build
index fa5286ce981..725254b56ce 100644
--- a/src/libfetchers/meson.build
+++ b/src/libfetchers/meson.build
@@ -54,7 +54,6 @@ sources = files(
   'github.cc',
   'indirect.cc',
   'mercurial.cc',
-  'mounted-source-accessor.cc',
   'path.cc',
   'registry.cc',
   'store-path-accessor.cc',
@@ -72,7 +71,6 @@ headers = files(
   'filtering-source-accessor.hh',
   'git-lfs-fetch.hh',
   'git-utils.hh',
-  'mounted-source-accessor.hh',
   'registry.hh',
   'store-path-accessor.hh',
   'tarball.hh',
diff --git a/src/libfetchers/mounted-source-accessor.hh b/src/libfetchers/mounted-source-accessor.hh
deleted file mode 100644
index 45cbcb09a24..00000000000
--- a/src/libfetchers/mounted-source-accessor.hh
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-
-#include "source-accessor.hh"
-
-namespace nix {
-
-ref<SourceAccessor> makeMountedSourceAccessor(std::map<CanonPath, ref<SourceAccessor>> mounts);
-
-}
diff --git a/src/libutil/meson.build b/src/libutil/meson.build
index 9ee3770de2c..b6a33135a9b 100644
--- a/src/libutil/meson.build
+++ b/src/libutil/meson.build
@@ -153,6 +153,7 @@ sources = files(
   'json-utils.cc',
   'logging.cc',
   'memory-source-accessor.cc',
+  'mounted-source-accessor.cc',
   'position.cc',
   'posix-source-accessor.cc',
   'references.cc',
diff --git a/src/libfetchers/mounted-source-accessor.cc b/src/libutil/mounted-source-accessor.cc
similarity index 98%
rename from src/libfetchers/mounted-source-accessor.cc
rename to src/libutil/mounted-source-accessor.cc
index 68f3a546b57..45c8adbd8b5 100644
--- a/src/libfetchers/mounted-source-accessor.cc
+++ b/src/libutil/mounted-source-accessor.cc
@@ -1,4 +1,4 @@
-#include "mounted-source-accessor.hh"
+#include "source-accessor.hh"
 
 namespace nix {
 
diff --git a/src/libutil/source-accessor.hh b/src/libutil/source-accessor.hh
index 42af8256a8f..b79f8af92cf 100644
--- a/src/libutil/source-accessor.hh
+++ b/src/libutil/source-accessor.hh
@@ -214,4 +214,6 @@ ref<SourceAccessor> getFSSourceAccessor();
  */
 ref<SourceAccessor> makeFSSourceAccessor(std::filesystem::path root);
 
+ref<SourceAccessor> makeMountedSourceAccessor(std::map<CanonPath, ref<SourceAccessor>> mounts);
+
 }