diff --git a/main.go b/main.go
index 7da215a..0b11463 100644
--- a/main.go
+++ b/main.go
@@ -236,6 +236,18 @@ func renderIndex(w gemini.ResponseWriter, client TreeManagerClient) {
 		return
 	}
 
+	lastRebuild, found := db.Get("last_rebuild")
+	if !found {
+		w.WriteHeader(gemini.StatusTemporaryFailure, "Internal server error")
+		return
+	}
+
+	pageCounter, found := db.Get("page_counter")
+	if !found {
+		w.WriteHeader(gemini.StatusTemporaryFailure, "Internal server error")
+		return
+	}
+
 	w.SetMediaType("text/gemini")
 	tpl := pongo2.Must(pongo2.FromFile(fmt.Sprintf("templates/%s/index.gmi", defaultLang)))
 	page, err := tpl.Execute(
@@ -243,8 +255,8 @@ func renderIndex(w gemini.ResponseWriter, client TreeManagerClient) {
 			"tree":        tree,
 			"lang":        defaultLang,
 			"lastFiles":   GetLastFiles(tree.Files),
-			"lastRebuild": db.Get("last_rebuild"),
-			"pageCounter": db.Get("page_counter"),
+			"lastRebuild": lastRebuild,
+			"pageCounter": pageCounter,
 		},
 	)
 	if err != nil {