diff --git a/math.c b/math.c
index 65a805698a..0b15ba7056 100644
--- a/math.c
+++ b/math.c
@@ -426,6 +426,7 @@ math_exp(VALUE unused_obj, VALUE x)
 #endif
 
 static double math_log1(VALUE x);
+FUNC_MINIMIZED(static VALUE math_log(int, const VALUE *, VALUE));
 
 /*
  *  call-seq:
@@ -450,6 +451,12 @@ static double math_log1(VALUE x);
 
 static VALUE
 math_log(int argc, const VALUE *argv, VALUE unused_obj)
+{
+    return rb_math_log(argc, argv);
+}
+
+VALUE
+rb_math_log(int argc, const VALUE *argv)
 {
     VALUE x, base;
     double d;
@@ -923,13 +930,6 @@ exp1(cos)
 exp1(cosh)
 exp1(exp)
 exp2(hypot)
-
-VALUE
-rb_math_log(int argc, const VALUE *argv)
-{
-    return math_log(argc, argv, 0);
-}
-
 exp1(sin)
 exp1(sinh)
 #if 0