diff --git a/vtkm/cont/internal/OptionParser.h b/vtkm/cont/internal/OptionParser.h
index 2e0d6127df86b80e6a2456384790a052b62fd573..fd5b7e72d16e443b7c56a1c69c881e2180205d89 100644
--- a/vtkm/cont/internal/OptionParser.h
+++ b/vtkm/cont/internal/OptionParser.h
@@ -42,7 +42,7 @@ namespace internal
 
 // Include from third party.
 // @cond NONE
-#include <vtkmoptionparser/optionparser.h>
+#include <vtkm/thirdparty/optionparser/vtkmoptionparser/optionparser.h>
 // @endcond
 
 // Now restore the header guards as before so that other includes of (possibly different versions