diff --git a/Misc/NEWS b/Misc/NEWS
index c84325796ee..3c86cf23057 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -149,6 +149,10 @@ Core and Builtins
 Library
 -------
 
+- Partial fix to issue #1731706: memory leak in Tkapp_Call when calling
+  from a thread different than the one that created the Tcl interpreter.
+  Patch by Robert Hancock.
+
 - Issue #1520877: Now distutils.sysconfig reads $AR from the 
   environment/Makefile. Patch by Douglas Greiman.
 
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 8b56bcd0dc3..79fa6327ae3 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -1256,7 +1256,9 @@ Tkapp_CallProc(Tkapp_CallEvent *e, int flags)
 		*(e->res) = Tkapp_CallResult(e->self);
 	}
 	LEAVE_PYTHON
-  done:
+
+	Tkapp_CallDeallocArgs(objv, objStore, objc);
+done:
 	/* Wake up calling thread. */
 	Tcl_MutexLock(&call_mutex);
 	Tcl_ConditionNotify(&e->done);