diff --git a/Tuprules.tup b/Tuprules.tup
new file mode 100644
index 0000000..73025f7
--- /dev/null
+++ b/Tuprules.tup
@@ -0,0 +1 @@
+PROTOCOLS = $(TUP_CWD)/<protocols>
diff --git a/src/syndicate/protocols/Tupfile b/src/syndicate/protocols/Tupfile
index 1dfa461..7d6104b 100644
--- a/src/syndicate/protocols/Tupfile
+++ b/src/syndicate/protocols/Tupfile
@@ -17,6 +17,6 @@ modules += worker.nim
 
 : ../../../../syndicate-protocols/schema-bundle.bin \
 	|> !preserves_schema_nim \
-	|> $(modules) | ../../../<protocols> {generated}
+	|> $(modules) | $(PROTOCOLS) {generated}
 
 : foreach {generated} | {generated} |> !nim_run |>
diff --git a/tests/Tupfile b/tests/Tupfile
index 77cf1bf..7f65d3e 100644
--- a/tests/Tupfile
+++ b/tests/Tupfile
@@ -1,2 +1,2 @@
 include_rules
-: test_simpleChatProtocol.nim | ../<protocols> |> !nim_run |>
+: test_simpleChatProtocol.nim | $(PROTOCOLS) |> !nim_run |>