Index: printing/backend/print_backend_cups.cc
diff --git a/printing/backend/print_backend_cups.cc b/printing/backend/print_backend_cups.cc
index 8bacfd76a7b0d891bd542ee19187c5b2701f0dbe..b469a1c657e5d383ed80961abb11a081ea8c8dce 100644
--- a/printing/backend/print_backend_cups.cc
+++ b/printing/backend/print_backend_cups.cc
@@ -4,6 +4,7 @@
 
 #include "printing/backend/print_backend_cups.h"
 
+#include <cups/ppd.h>
 #include <dlfcn.h>
 #include <errno.h>
 #include <pthread.h>