1 files changed, 8 insertions, 0 deletions
diff --git a/complex.c b/complex.c
index f69c976ac0..6dc09526d5 100644
--- a/complex.c
+++ b/complex.c
@@ -320,6 +320,10 @@ f_complex_new_bang2(VALUE klass, VALUE x, VALUE y)
     return nucomp_s_new_internal(klass, x, y);
 }
 
+#ifndef RUBY_VERSION_CODE
+#include "version.h"
+#endif
+
 #if RUBY_VERSION_CODE < 200
 #define CANON
 #endif
@@ -1427,6 +1431,10 @@ Init_Complex(void)
     rb_undef_method(rb_cComplex, "step");
     rb_undef_method(rb_cComplex, "truncate");
 
+#ifndef NUBY
+#define NUBY 0
+#endif
+
 #if NUBY
     rb_undef_method(rb_cComplex, "//");
 #endif