diff --git a/tests/codex/slots/testbackends.nim b/tests/codex/slots/testbackends.nim
new file mode 100644
index 00000000..b9994fcd
--- /dev/null
+++ b/tests/codex/slots/testbackends.nim
@@ -0,0 +1,3 @@
+import ./backends/testcircomcompat
+
+{.warning[UnusedImport]: off.}
diff --git a/tests/codex/testslots.nim b/tests/codex/testslots.nim
index f37e0927..da748199 100644
--- a/tests/codex/testslots.nim
+++ b/tests/codex/testslots.nim
@@ -1,5 +1,6 @@
 import ./slots/testslotbuilder
 import ./slots/testsampler
 import ./slots/testconverters
+import ./slots/testbackends
 
 {.warning[UnusedImport]: off.}