diff --git a/fuse_sideload.h b/fuse_sideload.h
index c0b16ef..2a8ebfc 100644
--- a/fuse_sideload.h
+++ b/fuse_sideload.h
@@ -35,4 +35,13 @@
 int run_fuse_sideload(struct provider_vtab* vtab, void* cookie,
                       uint64_t file_size, uint32_t block_size);
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+int run_old_fuse_sideload(struct provider_vtab* vtab, void* cookie,
+                      uint64_t file_size, uint32_t block_size);
+#ifdef __cplusplus
+}
+#endif
+
 #endif