diff --git a/test/algorithm_test/AdjustedAlgorithm_test.py b/test/algorithm_test/AdjustedAlgorithm_test.py
index 220d498c6f1bf6a65e59243523cd73789b6dc95e..d5f0b9d89ffde765495d0ae80cccb9029b3d550a 100644
--- a/test/algorithm_test/AdjustedAlgorithm_test.py
+++ b/test/algorithm_test/AdjustedAlgorithm_test.py
@@ -54,7 +54,9 @@ def test_process_XYZF_AdjustedMatrix():
                 [0, 0, 0, 1],
             ],
             pier_correction=-22,
-        )
+        ),
+        inchannels=["H", "E", "Z", "F"],
+        outchannels=["X", "Y", "Z", "F"],
     )
 
     # load boulder Jan 16 files from /etc/ directory
@@ -114,7 +116,11 @@ def test_process_XYZF_statefile():
     Uses statefile to generate AdjustedMatrix
     """
     # load adjusted data transform matrix and pier correction
-    a = AdjustedAlgorithm(statefile="etc/adjusted/adjbou_state_.json")
+    a = AdjustedAlgorithm(
+        statefile="etc/adjusted/adjbou_state_.json",
+        inchannels=["H", "E", "Z", "F"],
+        outchannels=["X", "Y", "Z", "F"],
+    )
 
     # load boulder Jan 16 files from /etc/ directory
     with open("etc/adjusted/BOU201601vmin.min") as f:
@@ -167,11 +173,12 @@ def test_process_no_statefile():
     Uses default AdjustedMatrix with identity transform
     """
     # initialize adjusted algorithm with no statefile
-    a = AdjustedAlgorithm()
+    a = AdjustedAlgorithm(inchannels=["H", "E", "Z", "F"])
     # load boulder Jan 16 files from /etc/ directory
     with open("etc/adjusted/BOU201601vmin.min") as f:
         raw = i2.IAGA2002Factory().parse_string(f.read())
     # process hezf (raw) channels with identity transform
+    print(a.matrix)
     adjusted = a.process(raw)
     for i in range(len(adjusted)):
         assert_array_equal(adjusted[i].data, raw[i].data)