diff --git a/tests/test_helper.tcl b/tests/test_helper.tcl
index 568eacdee..1442067f5 100644
--- a/tests/test_helper.tcl
+++ b/tests/test_helper.tcl
@@ -503,7 +503,7 @@ for {set j 0} {$j < [llength $argv]} {incr j} {
     } elseif {$opt eq {--only}} {
         lappend ::only_tests $arg
         incr j
-    } elseif {$opt eq {--skiptill}} {
+    } elseif {$opt eq {--skip-till}} {
         set ::skip_till $arg
         incr j
     } elseif {$opt eq {--list-tests}} {