diff --git a/NEWS b/NEWS
index e4bdd351e..4191ac0e8 100644
--- a/NEWS
+++ b/NEWS
@@ -48,6 +48,7 @@ ver 0.24 (not yet released)
 * remove Haiku support
 * remove Boost dependency
 * require libfmt 7 or later
+* support libfmt 10
 
 ver 0.23.12 (2023/01/17)
 * input
diff --git a/src/TimePrint.cxx b/src/TimePrint.cxx
index 5bf05f623..d47f3178b 100644
--- a/src/TimePrint.cxx
+++ b/src/TimePrint.cxx
@@ -20,5 +20,5 @@ time_print(Response &r, const char *name,
 		return;
 	}
 
-	r.Fmt(FMT_STRING("{}: {}\n"), name, s);
+	r.Fmt(FMT_STRING("{}: {}\n"), name, s.c_str());
 }