diff --git a/lsw.c b/lsw.c
index 9b01f6a..c821f11 100644
--- a/lsw.c
+++ b/lsw.c
@@ -52,9 +52,13 @@ getname(Window win) {
 	int n;
 	XTextProperty prop;
 
-	if(!XGetTextProperty(dpy, win, &prop, netwmname) || prop.nitems == 0)
-		if(!XGetWMName(dpy, win, &prop) || prop.nitems == 0)
+	prop.value = NULL;
+	if(!XGetTextProperty(dpy, win, &prop, netwmname) || prop.nitems == 0) {
+		if(prop.value != NULL)
+			XFree(prop.value);
+		if(!XGetWMName(dpy, win, &prop))
 			return "";
+	}
 	if(!XmbTextPropertyToTextList(dpy, &prop, &list, &n) && n > 0) {
 		strncpy(buf, list[0], sizeof buf);
 		XFreeStringList(list);