diff --git a/except.cpp b/except.cpp
index 5e0da57..81f2ec5 100644
--- a/except.cpp
+++ b/except.cpp
@@ -43,7 +43,17 @@ using cruft::vk::error_code;
         VK_ERROR_FEATURE_NOT_PRESENT, \
         VK_ERROR_INCOMPATIBLE_DRIVER, \
         VK_ERROR_TOO_MANY_OBJECTS, \
-        VK_ERROR_FORMAT_NOT_SUPPORTED)
+        VK_ERROR_FORMAT_NOT_SUPPORTED, \
+        VK_ERROR_FRAGMENTED_POOL, \
+        VK_ERROR_VALIDATION_FAILED_EXT, \
+        VK_ERROR_SURFACE_LOST_KHR, \
+        VK_ERROR_NATIVE_WINDOW_IN_USE_KHR, \
+        VK_SUBOPTIMAL_KHR, \
+        VK_ERROR_OUT_OF_DATE_KHR, \
+        VK_ERROR_INCOMPATIBLE_DISPLAY_KHR, \
+        VK_ERROR_OUT_OF_POOL_MEMORY_KHR, \
+        VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR, \
+        VK_ERROR_INVALID_SHADER_NV)
 
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -73,6 +83,22 @@ to_string (VkResult res)
     case VK_ERROR_INCOMPATIBLE_DRIVER:      return "incompatible driver";
     case VK_ERROR_TOO_MANY_OBJECTS:         return "too many objects";
     case VK_ERROR_FORMAT_NOT_SUPPORTED:     return "format not supported";
+    case VK_ERROR_FRAGMENTED_POOL:          return "fragmented pool";
+
+    // EXT
+    case VK_ERROR_VALIDATION_FAILED_EXT:    return "validation failed";
+
+    // KHR
+    case VK_ERROR_SURFACE_LOST_KHR:             return "surface lost";
+    case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR:     return "native window in use";
+    case VK_SUBOPTIMAL_KHR:                     return "suboptimal";
+    case VK_ERROR_OUT_OF_DATE_KHR:              return "out of date";
+    case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR:     return "incompatible display";
+    case VK_ERROR_OUT_OF_POOL_MEMORY_KHR:       return "out of pool memory";
+    case VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR:  return "invalid external handle";
+
+    // NV
+    case VK_ERROR_INVALID_SHADER_NV: return "invalid shader";
     }
 
     unreachable ();