1 files changed, 3 insertions, 0 deletions
diff --git a/regex.c b/regex.c
index 20b3d2d66a..6992e7f702 100644
--- a/regex.c
+++ b/regex.c
@@ -43,6 +43,9 @@
 #endif
 
 #include "config.h"
+#ifdef RUBY_PLATFORM
+# define RUBY
+#endif
 
 void *xmalloc P((unsigned long));
 void *xcalloc P((unsigned long,unsigned long));