diff --git a/libmultipath/structs.c b/libmultipath/structs.c
--- a/libmultipath/structs.c
+++ b/libmultipath/structs.c
@@ -12,6 +12,7 @@
 #include "structs.h"
 #include "config.h"
 #include "debug.h"
+#include "../libcheckers/path_state.h"
 
 struct path *
 alloc_path (void)