diff --git a/runtox.py b/runtox.py
index 94e80ba4f..8c13c53e1 100644
--- a/runtox.py
+++ b/runtox.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python
 
-import subprocess
-import sys
-
 if __name__ == "__main__":
-    subprocess.call(["tox",
+    import subprocess
+    import sys
+    subprocess.call([sys.executable, "-m", "tox",
                      "-i", "ALL=https://devpi.net/hpk/dev/",
-                     "--develop",] + sys.argv[1:])
-
+                     "--develop"] + sys.argv[1:])