diff --git a/libguile/private-gc.h b/libguile/private-gc.h
index 00bef9d2e..b38addebd 100644
--- a/libguile/private-gc.h
+++ b/libguile/private-gc.h
@@ -112,6 +112,9 @@ void scm_mark_all (void);
 extern long int scm_i_deprecated_memory_return;
 extern long int scm_i_find_heap_calls;
 
+SCM_INTERNAL char const *scm_i_tag_name (scm_t_bits tag); /* MOVEME */
+
+
 /*
   global init funcs.
  */
diff --git a/libguile/threads.c b/libguile/threads.c
index 1ccfdca97..8ffefae2e 100644
--- a/libguile/threads.c
+++ b/libguile/threads.c
@@ -18,6 +18,10 @@
 
 
 
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include "libguile/boehm-gc.h"
 #include "libguile/_scm.h"