diff --git a/preprocessor b/preprocessor
index a1437ac98..4897ab7d6 160000
--- a/preprocessor
+++ b/preprocessor
@@ -1 +1 @@
-Subproject commit a1437ac982d684289e292bc8ce8f9af29354587c
+Subproject commit 4897ab7d6955dd209aa3f417374f7287fee9ae9b