1 files changed, 1 insertions, 4 deletions
diff --git a/complex.c b/complex.c
index decd996a91..7189e8bdf8 100644
--- a/complex.c
+++ b/complex.c
@@ -6,6 +6,7 @@
 */
 
 #include "ruby.h"
+#include "internal.h"
 #include <math.h>
 
 #define NDEBUG
@@ -508,8 +509,6 @@ imp2(hypot)
 
 #define m_hypot(x,y) m_hypot_bang((x),(y))
 
-extern VALUE rb_math_log(int argc, VALUE *argv);
-
 static VALUE
 m_log_bang(VALUE x)
 {
@@ -1092,8 +1091,6 @@ nucomp_inexact_p(VALUE self)
 }
 #endif
 
-extern VALUE rb_lcm(VALUE x, VALUE y);
-
 /*
  * call-seq:
  *    cmp.denominator  ->  integer