diff --git a/src/libfetchers/input-accessor.hh b/src/libfetchers/input-accessor.hh
index 524a94cd1..5dc05a363 100644
--- a/src/libfetchers/input-accessor.hh
+++ b/src/libfetchers/input-accessor.hh
@@ -16,6 +16,15 @@ class Store;
 
 struct InputAccessor : SourceAccessor, std::enable_shared_from_this<InputAccessor>
 {
+    /**
+     * Return the maximum last-modified time of the files in this
+     * tree, if available.
+     */
+    virtual std::optional<time_t> getLastModified()
+    {
+        return std::nullopt;
+    }
+
     StorePath fetchToStore(
         ref<Store> store,
         const CanonPath & path,
diff --git a/src/libutil/source-accessor.hh b/src/libutil/source-accessor.hh
index 4074b2e63..53408eb6c 100644
--- a/src/libutil/source-accessor.hh
+++ b/src/libutil/source-accessor.hh
@@ -83,16 +83,7 @@ struct SourceAccessor
         return number < x.number;
     }
 
-    void setPathDisplay(std::string displayPrefix, std::string displaySuffix = "");
-
     virtual std::string showPath(const CanonPath & path);
-
-    /* Return the maximum last-modified time of the files in this
-       tree, if available. */
-    virtual std::optional<time_t> getLastModified()
-    {
-        return std::nullopt;
-    }
 };
 
 /**