diff --git a/tests/controls/gridtest.cpp b/tests/controls/gridtest.cpp
index bae013388d..d2c42b4441 100644
--- a/tests/controls/gridtest.cpp
+++ b/tests/controls/gridtest.cpp
@@ -818,6 +818,16 @@ void GridTestCase::ReadOnly()
     CPPUNIT_ASSERT(m_grid->IsReadOnly(1, 1));
 
     m_grid->SetFocus();
+
+#ifdef __WXGTK__
+    // This is a mystery, but we somehow get WXK_RETURN generated by the
+    // previous test (Editable) in this one. In spite of wxYield() in that
+    // test, the key doesn't get dispatched there and we have to consume it
+    // here before setting the current grid cell, as getting WXK_RETURN later
+    // would move the selection down, to a non read-only cell.
+    wxYield();
+#endif // __WXGTK__
+
     m_grid->SetGridCursor(1, 1);
 
     CPPUNIT_ASSERT(m_grid->IsCurrentCellReadOnly());