diff --git a/calyx-py/test/correctness/builder_util.py b/calyx-py/calyx/builder_util.py
similarity index 100%
rename from calyx-py/test/correctness/builder_util.py
rename to calyx-py/calyx/builder_util.py
diff --git a/calyx-py/test/correctness/fifo.py b/calyx-py/test/correctness/fifo.py
index 4a70428cf1..df9233b6bd 100644
--- a/calyx-py/test/correctness/fifo.py
+++ b/calyx-py/test/correctness/fifo.py
@@ -1,5 +1,5 @@
 # pylint: disable=import-error
-import builder_util as util
+import calyx.builder_util as util
 import calyx.builder as cb
 
 
diff --git a/calyx-py/test/correctness/pifo.py b/calyx-py/test/correctness/pifo.py
index e9a7e205bc..e8c7e1b71e 100644
--- a/calyx-py/test/correctness/pifo.py
+++ b/calyx-py/test/correctness/pifo.py
@@ -1,6 +1,6 @@
 # pylint: disable=import-error
 import fifo
-import builder_util as util
+import calyx.builder_util as util
 import calyx.builder as cb