diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 717553e4848..1a1b5ebc97a 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -5080,8 +5080,8 @@ namespace ts {
                 (<InterfaceTypeWithDeclaredMembers>type).declaredProperties = getNamedMembers(symbol.members);
                 (<InterfaceTypeWithDeclaredMembers>type).declaredCallSignatures = getSignaturesOfSymbol(symbol.members.get("__call"));
                 (<InterfaceTypeWithDeclaredMembers>type).declaredConstructSignatures = getSignaturesOfSymbol(symbol.members.get("__new"));
-                (<InterfaceTypeWithDeclaredMembers>type).declaredNumberIndexInfo = getIndexInfoOfSymbol(symbol, IndexKind.Number);
                 (<InterfaceTypeWithDeclaredMembers>type).declaredStringIndexInfo = getIndexInfoOfSymbol(symbol, IndexKind.String);
+                (<InterfaceTypeWithDeclaredMembers>type).declaredNumberIndexInfo = getIndexInfoOfSymbol(symbol, IndexKind.Number);
             }
             return <InterfaceTypeWithDeclaredMembers>type;
         }