diff --git a/src/spectrumdevice/devices/mocks/__init__.py b/src/spectrumdevice/devices/mocks/__init__.py
index 7e368fc..12db1a4 100644
--- a/src/spectrumdevice/devices/mocks/__init__.py
+++ b/src/spectrumdevice/devices/mocks/__init__.py
@@ -11,7 +11,8 @@
 from numpy import zeros
 
 from spectrum_gmbh.regs import (
-    SPC_FNCTYPE, SPC_MIINST_CHPERMODULE,
+    SPC_FNCTYPE,
+    SPC_MIINST_CHPERMODULE,
     SPC_MIINST_MODULES,
     SPC_PCITYP,
 )