gdiplus: First pen test.
diff --git a/configure.ac b/configure.ac
index 81fd87a..72359fe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1517,6 +1517,7 @@
 AC_CONFIG_FILES([dlls/gdi32/Makefile])
 AC_CONFIG_FILES([dlls/gdi32/tests/Makefile])
 AC_CONFIG_FILES([dlls/gdiplus/Makefile])
+AC_CONFIG_FILES([dlls/gdiplus/tests/Makefile])
 AC_CONFIG_FILES([dlls/glu32/Makefile])
 AC_CONFIG_FILES([dlls/gphoto2.ds/Makefile])
 AC_CONFIG_FILES([dlls/hal/Makefile])