diff --git a/tests/issues.cpp b/tests/issues.cpp
index e89b829..241a0df 100644
--- a/tests/issues.cpp
+++ b/tests/issues.cpp
@@ -22,3 +22,11 @@ TEST_CASE("Issue 17", "[issues.17]") {
 
   intermediate_result.and_then(operation2);
 }
+
+struct a{};
+struct b:a{};
+
+TEST_CASE("Issue 26", "[issues.26]") {
+    tl::expected<a, int> exp = tl::expected<b,int>(tl::unexpect, 0);
+    REQUIRE(!exp.has_value());
+}
diff --git a/tl/expected.hpp b/tl/expected.hpp
index a4be506..34da3d6 100644
--- a/tl/expected.hpp
+++ b/tl/expected.hpp
@@ -1487,8 +1487,10 @@ public:
       : ctor_base(detail::default_constructor_tag{}) {
     if (rhs.has_value()) {
       ::new (valptr()) T(*rhs);
+      this->m_has_val = true;        
     } else {
       ::new (errptr()) unexpected_type(unexpected<E>(rhs.error()));
+      this->m_has_val = false;                
     }
   }
 
@@ -1503,8 +1505,10 @@ public:
       : ctor_base(detail::default_constructor_tag{}) {
     if (rhs.has_value()) {
       ::new (valptr()) T(*rhs);
+      this->m_has_val = true;
     } else {
       ::new (errptr()) unexpected_type(unexpected<E>(rhs.error()));
+      this->m_has_val = false;                        
     }
   }
 
@@ -1517,8 +1521,10 @@ public:
       : ctor_base(detail::default_constructor_tag{}) {
     if (rhs.has_value()) {
       ::new (valptr()) T(std::move(*rhs));
+      this->m_has_val = true;        
     } else {
       ::new (errptr()) unexpected_type(unexpected<E>(std::move(rhs.error())));
+      this->m_has_val = false;                        
     }
   }
 
@@ -1532,8 +1538,10 @@ public:
       : ctor_base(detail::default_constructor_tag{}) {
     if (rhs.has_value()) {
       ::new (valptr()) T(std::move(*rhs));
+      this->m_has_val = true;        
     } else {
       ::new (errptr()) unexpected_type(unexpected<E>(std::move(rhs.error())));
+      this->m_has_val = false;                        
     }
   }