diff --git a/test/Serialization/alignment.swift b/test/Serialization/alignment.swift
index fc1f9da553061..f9ab8db3a5282 100644
--- a/test/Serialization/alignment.swift
+++ b/test/Serialization/alignment.swift
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: mkdir -p %t
 // RUN: %target-swift-frontend %s -emit-module -parse-as-library -o %t
-// RUN: %target-sil-opt -enable-sil-verify-all %t/alignment.swiftmodule -o - | %FileCheck %s
+// RUN: %target-sil-opt -disable-sil-linking -enable-sil-verify-all %t/alignment.swiftmodule -o - | %FileCheck %s
 
 //CHECK: @_alignment(16) struct Foo {
 @_alignment(16) struct Foo {}
diff --git a/test/Serialization/default-witness-table-deserialization.swift b/test/Serialization/default-witness-table-deserialization.swift
index c7e3ad56fd442..8f7757a531e95 100644
--- a/test/Serialization/default-witness-table-deserialization.swift
+++ b/test/Serialization/default-witness-table-deserialization.swift
@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend %s -module-name Test -sil-serialize-all -emit-module -emit-module-path - -o /dev/null | %target-sil-opt -enable-sil-verify-all -module-name="Test" | %FileCheck %s
+// RUN: %target-swift-frontend %s -module-name Test -sil-serialize-all -emit-module -emit-module-path - -o /dev/null | %target-sil-opt -enable-sil-verify-all -disable-sil-linking -module-name="Test" | %FileCheck %s
 
 // Check that default witness tables are properly deserialized.
 // rdar://problem/29173229
diff --git a/test/Serialization/global_init.swift b/test/Serialization/global_init.swift
index 25661569c7f96..2db8590cb26dc 100644
--- a/test/Serialization/global_init.swift
+++ b/test/Serialization/global_init.swift
@@ -2,7 +2,7 @@
 // RUN: mkdir -p %t
 // RUN: %target-swift-frontend -emit-module -parse-as-library -sil-serialize-all -o %t %s
 // RUN: llvm-bcanalyzer %t/global_init.swiftmodule | %FileCheck %s -check-prefix=BCANALYZER
-// RUN: %target-sil-opt -enable-sil-verify-all %t/global_init.swiftmodule | %FileCheck %s
+// RUN: %target-sil-opt -enable-sil-verify-all -disable-sil-linking %t/global_init.swiftmodule | %FileCheck %s
 
 // BCANALYZER-NOT: UnknownCode
 
diff --git a/test/Serialization/serialize_attr.swift b/test/Serialization/serialize_attr.swift
index 79e0a06fb6e0e..688fdb9cc480e 100644
--- a/test/Serialization/serialize_attr.swift
+++ b/test/Serialization/serialize_attr.swift
@@ -2,7 +2,7 @@
 // RUN: mkdir -p %t
 // RUN: %target-swift-frontend -emit-module -parse-as-library -sil-serialize-all -o %t %s
 // RUN: llvm-bcanalyzer %t/serialize_attr.swiftmodule | %FileCheck %s -check-prefix=BCANALYZER
-// RUN: %target-sil-opt -enable-sil-verify-all %t/serialize_attr.swiftmodule | %FileCheck %s
+// RUN: %target-sil-opt -enable-sil-verify-all -disable-sil-linking %t/serialize_attr.swiftmodule | %FileCheck %s
 
 // BCANALYZER-NOT: UnknownCode