diff --git a/src/core/namespace.c b/src/core/namespace.c
index 283a1108ce..abff997693 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -1621,16 +1621,11 @@ static int mount_image(
                 const ImagePolicy *image_policy) {
 
         _cleanup_(extension_release_data_done) ExtensionReleaseData rdata = {};
-        _cleanup_free_ char *extension_name = NULL;
         ImageClass required_class = _IMAGE_CLASS_INVALID;
         int r;
 
         assert(m);
 
-        r = path_extract_filename(mount_entry_source(m), &extension_name);
-        if (r < 0)
-                return log_debug_errno(r, "Failed to extract extension name from %s: %m", mount_entry_source(m));
-
         if (m->mode == MOUNT_EXTENSION_IMAGE) {
                 r = parse_os_release(
                                 empty_to_root(root_directory),