diff --git a/src/backend.c b/src/backend.c
index df920a0..ff91ee3 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -17,6 +17,7 @@
 #include <syslog.h>
 
 #include <common/compat.h>
+#include <common/config.h>
 #include <common/time.h>
 
 #include <types/buffers.h>