diff --git a/src/preserves/Tupfile b/src/preserves/Tupfile
index 4ba31e6..e36ead2 100644
--- a/src/preserves/Tupfile
+++ b/src/preserves/Tupfile
@@ -1,5 +1,7 @@
 include_rules
 NIM_FLAGS += --path:$(TUP_CWD)/..
+NIM_FLAGS_preserves_schemac += -d:npegDotDir="../.."
+
 : foreach preserves_schema_nim.nim schemaparse.nim |> !nim_bin |> $(BIN_DIR)/%B | $(BIN_DIR)/<%B>
 
 DOT_FILES = ../../Atom.dot ../../Document.dot ../../Schema.dot
diff --git a/src/preserves/preserves_schemac.nim.cfg b/src/preserves/preserves_schemac.nim.cfg
deleted file mode 100644
index 661ff6d..0000000
--- a/src/preserves/preserves_schemac.nim.cfg
+++ /dev/null
@@ -1 +0,0 @@
-d:npegDotDir:"../.."