diff --git a/gio/gdbusproxy.c b/gio/gdbusproxy.c
index 2ec99dcd0..906faa49d 100644
--- a/gio/gdbusproxy.c
+++ b/gio/gdbusproxy.c
@@ -180,7 +180,7 @@ enum
   LAST_SIGNAL,
 };
 
-guint signals[LAST_SIGNAL] = {0};
+static guint signals[LAST_SIGNAL] = {0};
 
 static void dbus_interface_iface_init (GDBusInterfaceIface *dbus_interface_iface);
 static void initable_iface_init       (GInitableIface *initable_iface);
diff --git a/gio/gdbusserver.c b/gio/gdbusserver.c
index faa18b235..7dde45305 100644
--- a/gio/gdbusserver.c
+++ b/gio/gdbusserver.c
@@ -148,7 +148,7 @@ enum
   LAST_SIGNAL,
 };
 
-guint _signals[LAST_SIGNAL] = {0};
+static guint _signals[LAST_SIGNAL] = {0};
 
 static void initable_iface_init       (GInitableIface *initable_iface);