diff --git a/python/slsdet/dacs.py b/python/slsdet/dacs.py
index 547a43277..e92c74914 100755
--- a/python/slsdet/dacs.py
+++ b/python/slsdet/dacs.py
@@ -49,7 +49,7 @@ class NamedDacs:
 
         #only get the dacnames if we have modules attached
         if detector.size() == 0:
-            self._dacnames  = [f"dac{i}" for i in range(18)]
+            self._dacnames  = [f"DAC{i}" for i in range(18)]
         else:
             self._dacnames = [n.replace(" ", "") for n in detector.getDacNames()]
 
diff --git a/python/tests/test_det_api.py b/python/tests/test_det_api.py
index bd98ba65a..be4cfa6c5 100644
--- a/python/tests/test_det_api.py
+++ b/python/tests/test_det_api.py
@@ -626,8 +626,8 @@ def test_dac(session_simulator, request):
         prev_dac_list = c.daclist
 
         invalid_assignments = [
-            (c.dacs, "vb_comp", 1200), # set random dac
-            (c.dacs, "DAC18", 1200), # set dac 18
+            (c.dacs, "vb_comp", "1200"), # set random dac
+            (c.dacs, "DAC18", "1200"), # set dac 18
             (c.dacs, "DAC0", "-1"),
             (c.dacs, "DAC0", "4096")
         ]