diff --git a/libguile/gc.c b/libguile/gc.c
index fe93cbaf9..13823c054 100644
--- a/libguile/gc.c
+++ b/libguile/gc.c
@@ -601,7 +601,7 @@ scm_storage_prehistory ()
   GC_set_finalize_on_demand (1);
 
 #if (GC_VERSION_MAJOR == 7 && GC_VERSION_MINOR == 4	\
-     && GC_ALPHA_VERSION == 0)
+     && GC_VERSION_MICRO == 0)
   /* BDW-GC 7.4.0 has a bug making it loop indefinitely when using more
      than one marker thread: <https://github.com/ivmai/bdwgc/pull/30>.
      Work around it by asking for one marker thread.  */