diff --git a/VulkanHppGenerator.cpp b/VulkanHppGenerator.cpp
index cc025be..30ba6dc 100644
--- a/VulkanHppGenerator.cpp
+++ b/VulkanHppGenerator.cpp
@@ -6861,25 +6861,25 @@ int main( int argc, char ** argv )
     }
 
     // assignment operators
-    Flags<BitType> & operator=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
     {
       m_mask = rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator|=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator|=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
     {
       m_mask |= rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator&=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator&=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
     {
       m_mask &= rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator^=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator^=(Flags<BitType> const& rhs) VULKAN_HPP_NOEXCEPT
     {
       m_mask ^= rhs.m_mask;
       return *this;
diff --git a/vulkan/vulkan.hpp b/vulkan/vulkan.hpp
index 6c70f99..3f76b9d 100644
--- a/vulkan/vulkan.hpp
+++ b/vulkan/vulkan.hpp
@@ -462,25 +462,25 @@ namespace VULKAN_HPP_NAMESPACE
     }
 
     // assignment operators
-    Flags<BitType> & operator=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
     {
       m_mask = rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator|=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator|=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
     {
       m_mask |= rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator&=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator&=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
     {
       m_mask &= rhs.m_mask;
       return *this;
     }
 
-    Flags<BitType> & operator^=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
+    VULKAN_HPP_CONSTEXPR_14 Flags<BitType> & operator^=( Flags<BitType> const & rhs ) VULKAN_HPP_NOEXCEPT
     {
       m_mask ^= rhs.m_mask;
       return *this;