diff --git a/core/parser/parser.factor b/core/parser/parser.factor
index ecb6ac1cfd..396a5507b5 100644
--- a/core/parser/parser.factor
+++ b/core/parser/parser.factor
@@ -163,6 +163,7 @@ SYMBOL: interactive-vocabs
     "inspector"
     "io"
     "io.files"
+    "io.pathnames"
     "kernel"
     "listener"
     "math"