diff --git a/src/eggsmclient-xsmp.c b/src/eggsmclient-xsmp.c
index 8d1c501..2c55b13 100644
--- a/src/eggsmclient-xsmp.c
+++ b/src/eggsmclient-xsmp.c
@@ -1195,6 +1195,7 @@ array_prop (const char *name, ...)
 		pv.value = value;
 		g_array_append_val (vals, pv);
 	}
+	va_end (ap);
 
 	prop->num_vals = vals->len;
 	prop->vals = (SmPropValue *)vals->data;