diff --git a/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity-check.cmake b/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity-check.cmake
new file mode 100644
index 0000000000..c17aaa06f1
--- /dev/null
+++ b/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity-check.cmake
@@ -0,0 +1 @@
+include(${CMAKE_CURRENT_LIST_DIR}/PchInterface-check.cmake)
diff --git a/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity.cmake b/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity.cmake
new file mode 100644
index 0000000000..59c2523c60
--- /dev/null
+++ b/Tests/RunCMake/PrecompileHeaders/PchInterfaceUnity.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_UNITY_BUILD 1)
+include(PchInterface.cmake)
diff --git a/Tests/RunCMake/PrecompileHeaders/RunCMakeTest.cmake b/Tests/RunCMake/PrecompileHeaders/RunCMakeTest.cmake
index b163369a26..c8a5c154c7 100644
--- a/Tests/RunCMake/PrecompileHeaders/RunCMakeTest.cmake
+++ b/Tests/RunCMake/PrecompileHeaders/RunCMakeTest.cmake
@@ -12,6 +12,7 @@ endfunction()
 run_cmake(DisabledPch)
 run_cmake(PchDebugGenex)
 run_test(PchInterface)
+run_test(PchInterfaceUnity)
 run_cmake(PchPrologueEpilogue)
 run_test(SkipPrecompileHeaders)
 run_test(CXXnotC)