diff --git a/tox.ini b/tox.ini
index d507b58a6..f427f3c18 100644
--- a/tox.ini
+++ b/tox.ini
@@ -193,7 +193,7 @@ whitelist_externals = *
 commands =
     bash -c '{env:IR_COMMAND} plugin remove tobiko || true'
     {env:IR_COMMAND} plugin add {toxinidir}/roles
-    {env:IR_COMMAND} tobiko --tobiko-src-dir {toxinidir} {posargs} 
+    {env:IR_COMMAND} tobiko --tobiko-src-dir {toxinidir} {posargs}
 
 
 # --- documentation environments ----------------------------------------------