diff --git a/lib/Sema/TypeCheckDecl.cpp b/lib/Sema/TypeCheckDecl.cpp
index 11505ac0d943c..80576dc66e0f3 100644
--- a/lib/Sema/TypeCheckDecl.cpp
+++ b/lib/Sema/TypeCheckDecl.cpp
@@ -3173,7 +3173,7 @@ class DeclChecker : public DeclVisitor<DeclChecker> {
         TAD->getUnderlyingTypeLoc().setInvalidType(TC.Context);
       } else if (TAD->getDeclContext()->isGenericContext()) {
         TAD->setInterfaceType(
-        TC.getInterfaceTypeFromInternalType(TAD->getDeclContext(),
+          TC.getInterfaceTypeFromInternalType(TAD->getDeclContext(),
                                               TAD->getType()));
       }