diff --git a/tests/Internals/has_shebang_line/.run b/tests/Internals/has_shebang_line/.run
new file mode 100755
index 0000000..7401c5c
--- /dev/null
+++ b/tests/Internals/has_shebang_line/.run
@@ -0,0 +1,3 @@
+echo "$1" > $tmp
+TESTING_URCHIN_INTERNALS=true . ../../../urchin
+has_shebang_line $tmp
diff --git a/tests/Internals/has_shebang_line/bash b/tests/Internals/has_shebang_line/bash
index ea2bd0b..a9e0e88 100755
--- a/tests/Internals/has_shebang_line/bash
+++ b/tests/Internals/has_shebang_line/bash
@@ -1 +1 @@
-run '!#/bin/bash'
+./.run '!#/bin/bash'
diff --git a/tests/Internals/has_shebang_line/empty b/tests/Internals/has_shebang_line/empty
index 5486748..f3de09f 100755
--- a/tests/Internals/has_shebang_line/empty
+++ b/tests/Internals/has_shebang_line/empty
@@ -1 +1 @@
-! run ''
+! ./.run ''
diff --git a/tests/Internals/has_shebang_line/empty-line b/tests/Internals/has_shebang_line/empty-line
index db0491e..71cc846 100755
--- a/tests/Internals/has_shebang_line/empty-line
+++ b/tests/Internals/has_shebang_line/empty-line
@@ -1,4 +1,4 @@
-! run '
+! ./.run '
 
 
 
diff --git a/tests/Internals/has_shebang_line/env b/tests/Internals/has_shebang_line/env
index c6f4a9b..8b7fbc2 100755
--- a/tests/Internals/has_shebang_line/env
+++ b/tests/Internals/has_shebang_line/env
@@ -1 +1 @@
-run '!#/usr/bin/env true'
+./.run '!#/usr/bin/env true'
diff --git a/tests/Internals/has_shebang_line/setup b/tests/Internals/has_shebang_line/setup
index 35878ac..e01b6ff 100644
--- a/tests/Internals/has_shebang_line/setup
+++ b/tests/Internals/has_shebang_line/setup
@@ -1,7 +1 @@
 export tmp=$(mktemp)
-
-run() {
-  TESTING_URCHIN_INTERNALS=true . ../../urchin
-  echo "$1" > $tmp
-  has_shebang_line $tmp
-}
diff --git a/tests/Internals/has_shebang_line/sh b/tests/Internals/has_shebang_line/sh
index 80fb3de..97e5f95 100755
--- a/tests/Internals/has_shebang_line/sh
+++ b/tests/Internals/has_shebang_line/sh
@@ -1 +1 @@
-! run '!#/bin/sh'
+! ./.run '!#/bin/sh'