diff --git a/tools/rbcrun/testdata/module1.star b/tools/rbcrun/testdata/module1.star
index be04f75..02919a0 100644
--- a/tools/rbcrun/testdata/module1.star
+++ b/tools/rbcrun/testdata/module1.star
@@ -2,6 +2,6 @@
 load("assert.star", "assert")
 
 # Make sure that builtins are defined for the loaded module, too
-assert.true(rblf_wildcard("module1.star"))
-assert.true(not rblf_wildcard("no_such file"))
+assert.true(rblf_wildcard("testdata/module1.star"))
+assert.true(not rblf_wildcard("testdata/no_such file"))
 test = "module1"