diff --git a/gdb/testsuite/gdb.base/timestamp.exp b/gdb/testsuite/gdb.base/timestamp.exp
index 3d124b450e5..c02b34391eb 100644
--- a/gdb/testsuite/gdb.base/timestamp.exp
+++ b/gdb/testsuite/gdb.base/timestamp.exp
@@ -21,4 +21,4 @@ clean_restart
 gdb_test_no_output "set debug expression 1"
 gdb_test_no_output "set debug timestamp 1"
 
-gdb_test "print 23" "\[0-9\]+\\.\[0-9\]+ Operation: OP_LONG.* = 23"
+gdb_test "print 23" "$decimal\\.$decimal Operation: OP_LONG.* = 23"