diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index 775f342d74..29ffd6e6ab 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -3224,10 +3224,10 @@ vlan_add (NMPlatform *platform,
 	unsigned int kernel_flags;
 	unsigned int all_flags = NM_VLAN_FLAGS_ALL;
 
-	G_STATIC_ASSERT (NM_VLAN_FLAG_REORDER_HEADERS == VLAN_FLAG_REORDER_HDR);
-	G_STATIC_ASSERT (NM_VLAN_FLAG_GVRP == VLAN_FLAG_GVRP);
-	G_STATIC_ASSERT (NM_VLAN_FLAG_LOOSE_BINDING == VLAN_FLAG_LOOSE_BINDING);
-	G_STATIC_ASSERT (NM_VLAN_FLAG_MVRP == VLAN_FLAG_MVRP);
+	G_STATIC_ASSERT (NM_VLAN_FLAG_REORDER_HEADERS == (guint32) VLAN_FLAG_REORDER_HDR);
+	G_STATIC_ASSERT (NM_VLAN_FLAG_GVRP == (guint32) VLAN_FLAG_GVRP);
+	G_STATIC_ASSERT (NM_VLAN_FLAG_LOOSE_BINDING == (guint32) VLAN_FLAG_LOOSE_BINDING);
+	G_STATIC_ASSERT (NM_VLAN_FLAG_MVRP == (guint32) VLAN_FLAG_MVRP);
 
 	kernel_flags = vlan_flags & ((guint32) NM_VLAN_FLAGS_ALL);