diff --git a/tox.ini b/tox.ini
index b95476f58..5b9a146fe 100644
--- a/tox.ini
+++ b/tox.ini
@@ -98,9 +98,9 @@ setenv =
 
 	 # If no positional arguments are given, try to run the checks on the
 	 # entire codebase, including various pieces of supporting code.
-	 DEFAULT_FILES="src integration static misc setup.py"
+	 DEFAULT_FILES=src integration static misc setup.py
 commands =
-         flake8 {posargs:{env:DEFAULT_FILES}}
+         flake8 -v {posargs:{env:DEFAULT_FILES}}
          python misc/coding_tools/check-umids.py {posargs:{env:DEFAULT_FILES}}
          python misc/coding_tools/check-debugging.py {posargs:{env:DEFAULT_FILES}}
          python misc/coding_tools/find-trailing-spaces.py -r {posargs:{env:DEFAULT_FILES}}