1 files changed, 1 insertions, 1 deletions

diff --git a/win32/regex_internal.c b/win32/regex_internal.c
index d4121f2f4..c33561743 100644
--- a/win32/regex_internal.c
+++ b/win32/regex_internal.c
@@ -685,7 +685,7 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
                          pstr->valid_len - offset);
               pstr->valid_len -= offset;
               pstr->valid_raw_len -= offset;
-#if DEBUG
+#ifdef DEBUG
               assert (pstr->valid_len > 0);
 #endif
             }