diff --git a/configure.ac b/configure.ac
index 20e1874..ff3cd7d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -148,8 +148,9 @@ if test "${ac_cv_my_have_gdi}" != "no"; then
   AC_DEFINE(USE_GDI, 1, Define to 1 to use GDI)
 fi
 AM_CONDITIONAL(USE_GDI, test "${ac_cv_my_have_gdi}" = "yes")
+AM_CONDITIONAL(USE_GDIPLUS, test "${ac_cv_my_have_gdi}" = "yes")
 
-# Use Cocoa? 
+# Use Cocoa?
 ac_cv_my_have_cocoa="no"
 AC_CHECK_HEADERS(/System/Library/Frameworks/Cocoa.framework/Headers/Cocoa.h,
 [