diff --git a/tox.ini b/tox.ini
index 367518c06..85492ff08 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,13 +2,13 @@
 
 [testenv]
 deps=
-	pytest
-	coverage
+    pytest
+    coverage
 passenv=
-	PYTHONASYNCIODEBUG
-	PYTHONDEVMODE
+    PYTHONASYNCIODEBUG
+    PYTHONDEVMODE
 commands=
-	coverage run --source=electrum '--omit=electrum/gui/*,electrum/plugins/*,electrum/scripts/*,electrum/tests/*' -m pytest -v
-	coverage report
+    coverage run --source=electrum '--omit=electrum/gui/*,electrum/plugins/*,electrum/scripts/*,electrum/tests/*' -m pytest -v
+    coverage report
 extras=
-	tests
+    tests