diff --git a/test/regression b/test/regression
index a64ac704..2d6aa6ce 100755
--- a/test/regression
+++ b/test/regression
@@ -31,7 +31,7 @@ exec tclsh $0 ${1+"$@"}
 
 # Directory containing tests.
 set test_dir [file dirname [file normalize [info script]]]
-set sta_dir [file normalize [file join $test_dir ".."]]
+set sta_dir [file dirname $test_dir]
 source [file join $test_dir regression_vars.tcl]
 source [file join $test_dir regression.tcl]