diff --git a/src/dbus.h b/src/dbus.h
index 54f4c8f4..971ff7db 100644
--- a/src/dbus.h
+++ b/src/dbus.h
@@ -23,6 +23,7 @@
 #include <stdbool.h>
 
 #define IWD_MANAGER_INTERFACE "net.connman.iwd.Manager"
+#define IWD_DEVICE_INTERFACE "net.connman.iwd.Device"
 
 struct l_dbus;
 
diff --git a/src/wiphy.c b/src/wiphy.c
index 32dd9fd0..5dd8b21e 100644
--- a/src/wiphy.c
+++ b/src/wiphy.c
@@ -36,8 +36,6 @@
 #include "src/wiphy.h"
 #include "src/dbus.h"
 
-#define IWD_DEVICE_INTERFACE "net.connman.iwd.Device"
-
 static const char *network_ssid = NULL;
 
 static struct l_genl *genl = NULL;