diff --git a/src/ppp-manager/nm-ppp-manager.c b/src/ppp-manager/nm-ppp-manager.c
index e27c82b70c..d410ebfab9 100644
--- a/src/ppp-manager/nm-ppp-manager.c
+++ b/src/ppp-manager/nm-ppp-manager.c
@@ -39,6 +39,7 @@
 #ifndef aligned_u64
 #define aligned_u64 unsigned long long __attribute__((aligned(8)))
 #endif
+#include <linux/if.h>
 #include <linux/if_ppp.h>
 
 #include "NetworkManagerUtils.h"