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-rw-r--r--libguile/stackchk.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/stackchk.c b/libguile/stackchk.c
index 6d3107836..d3a1190dd 100644
--- a/libguile/stackchk.c
+++ b/libguile/stackchk.c
@@ -74,11 +74,11 @@ long
scm_stack_size (SCM_STACKITEM *start)
{
SCM_STACKITEM stack;
-#ifdef SCM_STACK_GROWS_UP
+#if SCM_STACK_GROWS_UP
return &stack - start;
#else
return start - &stack;
-#endif /* def SCM_STACK_GROWS_UP */
+#endif /* SCM_STACK_GROWS_UP */
}