1 files changed, 2 insertions, 1 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 54299fe696..fa1339625c 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -717,8 +717,9 @@ end
 # of included directories that are sent to the compiler (via the -I switch).
 #
 def find_header(header, *paths)
+  message = checking_message(header, paths)
   header = cpp_include(header)
-  checking_for header do
+  checking_for message do
     if try_cpp(header)
       true
     else