diff --git a/internal/server/webdav_path_test.go b/internal/server/webdav_path_test.go
index 7c41558d7..e3c931119 100644
--- a/internal/server/webdav_path_test.go
+++ b/internal/server/webdav_path_test.go
@@ -1,8 +1,14 @@
 package server
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/photoprism/photoprism/pkg/http/proxy"
+)
 
 func TestIsWebDAVPath(t *testing.T) {
+	// Derive proxy paths from the configured prefix so the cases stay valid
+	// regardless of the proxy.PathPrefix / proxy.DefaultPathPrefix value.
 	tests := []struct {
 		name      string
 		path      string
@@ -11,12 +17,12 @@ func TestIsWebDAVPath(t *testing.T) {
 	}{
 		{name: "RootOriginals", path: "/originals", want: true},
 		{name: "RootImportChild", path: "/import/folder/file.jpg", want: true},
-		{name: "ProxyOriginals", path: "/i/acme/originals/", want: true},
-		{name: "ProxyImport", path: "/i/acme/import/a.jpg", want: true},
+		{name: "ProxyOriginals", path: proxy.PathPrefix + "acme/originals/", want: true},
+		{name: "ProxyImport", path: proxy.PathPrefix + "acme/import/a.jpg", want: true},
 		{name: "CustomBaseOriginals", path: "/instance-a/originals/album", basePaths: []string{"/instance-a/originals", "/instance-a/import"}, want: true},
 		{name: "CustomBaseImport", path: "/instance-a/import", basePaths: []string{"/instance-a/originals", "/instance-a/import"}, want: true},
 		{name: "LibraryPath", path: "/library/browse", want: false},
-		{name: "ProxyNonDAV", path: "/i/acme/library", want: false},
+		{name: "ProxyNonDAV", path: proxy.PathPrefix + "acme/library", want: false},
 	}
 
 	for _, tc := range tests {