diff --git a/src/bindings/eo_cxx/eo_cxx_interop.hh b/src/bindings/eo_cxx/eo_cxx_interop.hh
index bb3b6a4141..e7a7a3ee4f 100644
--- a/src/bindings/eo_cxx/eo_cxx_interop.hh
+++ b/src/bindings/eo_cxx/eo_cxx_interop.hh
@@ -40,6 +40,7 @@ to_c(bool x)
 inline Eina_Bool*
 to_c(bool* x)
 {
+   static_assert(sizeof(bool) == sizeof(Eina_Bool), "");
    return reinterpret_cast<Eina_Bool*>(x);
 }