diff --git a/meta-xfce/recipes-panel-plugins/datetime/xfce4-datetime-plugin_0.8.3.bb b/meta-xfce/recipes-panel-plugins/datetime/xfce4-datetime-plugin_0.8.3.bb
index f025edd4c5..b5837f9e51 100644
--- a/meta-xfce/recipes-panel-plugins/datetime/xfce4-datetime-plugin_0.8.3.bb
+++ b/meta-xfce/recipes-panel-plugins/datetime/xfce4-datetime-plugin_0.8.3.bb
@@ -5,4 +5,6 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552"
 
 inherit xfce-panel-plugin
 
+CFLAGS += "-DLIBXFCE4PANEL_COMPILATION"
+
 SRC_URI[sha256sum] = "6b2eeb79fb586868737426cbd2a4cd43c7f8c58507d8a2f578e0150187cc00b0"