diff --git a/windows/form.cpp b/windows/form.cpp
index a22f0f89..64b55a31 100644
--- a/windows/form.cpp
+++ b/windows/form.cpp
@@ -248,6 +248,7 @@ void uiFormAppend(uiForm *f, const char *label, uiControl *c, int stretchy)
 		SS_LEFT | SS_NOPREFIX,
 		hInstance, NULL,
 		TRUE);
+	uiFree(wlabel);
 	uiWindowsEnsureSetParentHWND(fc.label, f->hwnd);
 	fc.stretchy = stretchy;
 	uiControlSetParent(fc.c, uiControl(f));