diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index 743204e..93ae6f1 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -4395,8 +4395,7 @@
     } else if (EST == EST_Unevaluated) {
       EPI.ExceptionSpecDecl = ReadDeclAs<FunctionDecl>(*Loc.F, Record, Idx);
     }
-    return Context.getFunctionType(ResultType, ParamTypes.data(), NumParams,
-                                    EPI);
+    return Context.getFunctionType(ResultType, ParamTypes, EPI);
   }
 
   case TYPE_UNRESOLVED_USING: {