1 files changed, 1 insertions, 0 deletions
diff --git a/src/hir/serialise.cpp b/src/hir/serialise.cpp
index a1b8924a..30ce1bd4 100644
--- a/src/hir/serialise.cpp
+++ b/src/hir/serialise.cpp
@@ -591,6 +591,7 @@ namespace {
                 ),
             (Struct,
                 serialise_genericpath(e.path);
+                m_out.write_count(e.variant_idx);
                 serialise_vec(e.vals);
                 )
             )