1 files changed, 1 insertions, 0 deletions
diff --git a/src/hir/serialise.cpp b/src/hir/serialise.cpp
index 7c112b23..238b90d0 100644
--- a/src/hir/serialise.cpp
+++ b/src/hir/serialise.cpp
@@ -407,6 +407,7 @@ namespace {
         {
             //m_exported: IGNORE, should be set
             serialise_vec(mac.m_rules);
+            write_string(mac.m_source_crate);
         }
         void serialise(const ::MacroPatEnt& pe) {
             write_string(pe.name);