diff --git a/rostests/winetests/CMakeLists.txt b/rostests/winetests/CMakeLists.txt
index 40cffd8be17..4866549724f 100644
--- a/rostests/winetests/CMakeLists.txt
+++ b/rostests/winetests/CMakeLists.txt
@@ -75,9 +75,7 @@ add_subdirectory(quartz)
 add_subdirectory(rasapi32)
 add_subdirectory(riched20)
 add_subdirectory(riched32)
-if(NOT MSVC)
-    add_subdirectory(rpcrt4) # FIXME: msvc build.
-endif()
+add_subdirectory(rpcrt4)
 add_subdirectory(rsabase)
 add_subdirectory(rsaenh)
 add_subdirectory(schannel)
diff --git a/rostests/winetests/rpcrt4/CMakeLists.txt b/rostests/winetests/rpcrt4/CMakeLists.txt
index 799296c7618..0012f2da767 100644
--- a/rostests/winetests/rpcrt4/CMakeLists.txt
+++ b/rostests/winetests/rpcrt4/CMakeLists.txt
@@ -7,7 +7,7 @@ add_definitions(
     -D_DLL -D__USE_CRTIMP)
     
 if(MSVC)
-    set(IDL_FLAGS ${IDL_FLAGS} /prefix server s_)
+    set(IDL_FLAGS ${IDL_FLAGS} /prefix server s_ /app_config)
 else()
     set(IDL_FLAGS ${IDL_FLAGS} --prefix-server=s_)
 endif()