diff --git a/examples/get_title.c b/examples/get_title.c
index e6dcdec..99545ec 100644
--- a/examples/get_title.c
+++ b/examples/get_title.c
@@ -15,6 +15,9 @@
 // Author: jdtang@google.com (Jonathan Tang)
 //
 // Retrieves the title of a page.
+#ifdef __GNUC__
+#define _POSIX_C_SOURCE 1
+#endif
 
 #include <assert.h>
 #include <stdio.h>