diff --git a/x.c b/x.c
index 248d505..89786b8 100644
--- a/x.c
+++ b/x.c
@@ -1588,8 +1588,9 @@ xseticontitle(char *p)
 	XTextProperty prop;
 	DEFAULT(p, opt_title);
 
-	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
-			&prop);
+	if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+	                                &prop) != Success)
+		return;
 	XSetWMIconName(xw.dpy, xw.win, &prop);
 	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
 	XFree(prop.value);
@@ -1601,8 +1602,9 @@ xsettitle(char *p)
 	XTextProperty prop;
 	DEFAULT(p, opt_title);
 
-	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
-			&prop);
+	if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+	                                &prop) != Success)
+		return;
 	XSetWMName(xw.dpy, xw.win, &prop);
 	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
 	XFree(prop.value);