diff --git a/tests/Internals/has_shebang_line/.run b/tests/Internals/has_shebang_line/.run
index 7401c5c..1dcb8fd 100755
--- a/tests/Internals/has_shebang_line/.run
+++ b/tests/Internals/has_shebang_line/.run
@@ -1,3 +1,3 @@
 echo "$1" > $tmp
-TESTING_URCHIN_INTERNALS=true . ../../../urchin
+NO_MAIN= . ../../../urchin
 has_shebang_line $tmp
diff --git a/urchin b/urchin
index f1b5da2..ac7d930 100755
--- a/urchin
+++ b/urchin
@@ -742,4 +742,4 @@ wantto run urchin on that directory.' >&2
   exit "${exit_code}"
 }
 
-is_set TESTING_URCHIN_INTERNALS || main "$@"
+is_set NO_MAIN || main "$@"