diff --git a/Makefile.am b/Makefile.am
index 7290495f89..fc8fd6b318 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2470,7 +2470,7 @@ src_devices_team_libnm_device_plugin_team_la_CPPFLAGS = \
 	-I$(srcdir)/libnm-core \
 	-DG_LOG_DOMAIN=\""NetworkManager"\" \
 	-DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_INSIDE_DAEMON \
-	${LIBTEAMDCTL_CFLAGS} \
+	$(LIBTEAMDCTL_CFLAGS) \
 	$(GLIB_CFLAGS)
 
 src_devices_team_libnm_device_plugin_team_la_LDFLAGS = \