diff --git a/WeakAuras/Types.lua b/WeakAuras/Types.lua
index 68573c7..428e594 100644
--- a/WeakAuras/Types.lua
+++ b/WeakAuras/Types.lua
@@ -3839,7 +3839,10 @@ do
       local specs = C_ClassInfo.GetAllSpecs(class)
       if specs then
         for _, spec in ipairs(specs) do
-          addSpec(class, C_ClassInfo.GetSpecInfo(class, spec))
+          local ok, info = pcall(C_ClassInfo.GetSpecInfo, class, spec)
+          if ok and info then
+            addSpec(class, info)
+          end
         end
       end
     end