diff --git a/libstdc++-v3/testsuite/std/time/clock/gps/io.cc b/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
index 5d15713c69ddcdbce9e50ca55938f07808d809e3..d5405f61520ae72ab38dbde5988eccd76a4bdd11 100644
--- a/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
@@ -42,7 +42,7 @@ test_format()
 
   // PR libstdc++/113500
   s = std::format("{}", gt + 150ms + 10.5s);
-  VERIFY( s == "2000-01-01 00:00:35.650" );
+  VERIFY( s == "2000-01-01 00:00:23.650" );
 }
 
 void
@@ -65,5 +65,6 @@ test_parse()
 int main()
 {
   test_ostream();
+  test_format();
   test_parse();
 }