diff --git a/ibus.c b/ibus.c
index ae04ed3..aa065bb 100644
--- a/ibus.c
+++ b/ibus.c
@@ -526,11 +526,16 @@ dropconncontexts(DBusConnection *conn)
 			dropcontext(&contexts[i]);
 }
 
+/*
+ * A key is proof of focus: some clients never send FocusIn, and the
+ * focus events of two applications can cross.
+ */
 static int
 processkey(Ictx *ctx, u32int sym, u32int state, Keyres *res)
 {
-	if(state & Relmask || !ctx->focused || hidden(ctx))
+	if(state & Relmask || hidden(ctx))
 		return 0;
+	ctx->focused = 1;
 	sendrequest(ctx, Keypress, ipckeysym(sym, xkb_keysym_to_utf32(sym)),
 		ipcmod(state), res);
 	if(preowner != nil && preowner != ctx)
diff --git a/tests/ibus_test.c b/tests/ibus_test.c
index 8aa6bc5..ec4013b 100644
--- a/tests/ibus_test.c
+++ b/tests/ibus_test.c
@@ -281,25 +281,21 @@ ibus_context_lifecycle(struct ct *t)
 	CT_EQ_PTR(t, b, findcontext(f.c2, "/context/one"));
 	CT_EQ_PTR(t, nil, findcontext(f.c1, "/context/missing"));
 
-	memset(&res, 0, sizeof res);
-	CT_CHECK(t, !processkey(a, 'x', 0, &res));
-	CT_CHECK(t, !res.eaten);
-	notrace(t, &f);
-	CT_EQ_PTR(t, nil, testengineowner());
-
 	setcursor(a, -10, -20, 14);
 	notrace(t, &f);
 	CT_CHECK(t, a->caret.valid);
-	a->focused = 1;
 	memset(&res, 0, sizeof res);
 	CT_CHECK(t, !processkey(a, 'x', Relmask, &res));
 	CT_CHECK(t, !res.eaten);
 	notrace(t, &f);
+	CT_CHECK(t, !a->focused);
 	CT_EQ_PTR(t, nil, testengineowner());
 
+	/* A key stands for the FocusIn a client may never send. */
 	memset(&res, 0, sizeof res);
 	CT_CHECK(t, processkey(a, 'x', 0, &res));
 	req = nexttrace(t, &f, Keypress, a);
+	CT_CHECK(t, a->focused);
 	CT_CHECK(t, !res.eaten);
 	CT_CHECK(t, req.caret.valid);
 	CT_EQ_INT(t, -10, req.caret.x);
@@ -430,12 +426,8 @@ ibus_active_release_lifecycle(struct ct *t)
 	reused = newcontext(f.c1, "/context/prune");
 	CT_EQ_PTR(t, ctx, reused);
 	CT_EQ_PTR(t, nil, testengineowner());
-	memset(&res, 0, sizeof res);
-	CT_CHECK(t, !processkey(reused, 'x', 0, &res));
-	CT_CHECK(t, !res.eaten);
-	notrace(t, &f);
-	reused->focused = 1;
 	contextkey(t, &f, reused, 'n', 0);
+	CT_CHECK(t, reused->focused);
 	CT_EQ_PTR(t, reused, testengineowner());
 	dropconncontexts(f.c1);
 	nexttrace(t, &f, Keyrelease, reused);