diff --git a/composer.json b/composer.json
index df390465..c0947cbe 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
 		"classmap": ["src/"]
 	},
 	"scripts": {
-		"phpstan": "phpstan analyse --autoload-file vendor/autoload.php --level 5 src",
+		"phpstan": "phpstan analyse --autoload-file vendor/autoload.php --level 5 --configuration tests/phpstan.neon src",
 		"tester": "tester tests -s"
 	},
 	"extra": {
diff --git a/tests/phpstan.neon b/tests/phpstan.neon
new file mode 100644
index 00000000..edf5045b
--- /dev/null
+++ b/tests/phpstan.neon
@@ -0,0 +1,4 @@
+parameters:
+	ignoreErrors:
+		# The namespace is referenced, not the class.
+		- '#Class dibi referenced with incorrect case: Dibi#'