diff --git a/autotest/test_codegen.py b/autotest/test_codegen.py
index 453d78ba0..5248a9045 100644
--- a/autotest/test_codegen.py
+++ b/autotest/test_codegen.py
@@ -8,9 +8,7 @@
 MF6_PATH = PROJ_ROOT / "flopy" / "mf6"
 DFN_PATH = MF6_PATH / "data" / "dfn"
 DFN_NAMES = [
-    dfn.stem
-    for dfn in DFN_PATH.glob("*.dfn")
-    if dfn.stem not in ["common", "flopy"]
+    dfn.stem for dfn in DFN_PATH.glob("*.dfn") if dfn.stem not in ["common", "flopy"]
 ]