diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e492a0c7..b0dbfaf27 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -99,8 +99,8 @@ if("${CMAKE_BUILD_TYPE}" STREQUAL "Release" AND NOT CMAKE_GENERATOR MATCHES "Xco
   file(RELATIVE_PATH source_dir_remap "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}")
   string(REGEX REPLACE "\/+$" "" source_dir_remap "${source_dir_remap}")
   set(source_dir_remap_str "\"${CMAKE_SOURCE_DIR}\"=\"${source_dir_remap}\"")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fmacro-prefix-map=${source_dir_remap_str} -ffile-prefix-map=${source_dir_remap_str}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmacro-prefix-map=${source_dir_remap_str} -ffile-prefix-map=${source_dir_remap_str}")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffile-prefix-map=${source_dir_remap_str}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffile-prefix-map=${source_dir_remap_str}")
 endif()
 
 # Write binaries to a seperate directory.
diff --git a/dep/msvc/vsprops/Base.props b/dep/msvc/vsprops/Base.props
index 6f72fc136..bcaf6ed2e 100644
--- a/dep/msvc/vsprops/Base.props
+++ b/dep/msvc/vsprops/Base.props
@@ -41,7 +41,7 @@
       <RuntimeTypeInfo>false</RuntimeTypeInfo>
       <AdditionalOptions Condition="$(Configuration.Contains(Clang))">/clang:-fno-rtti %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="!$(Configuration.Contains(Clang)) And $(Configuration.Contains(ReleaseLTCG))">/d1trimfile:&quot;$(SolutionDir)\&quot; %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalOptions Condition="$(Configuration.Contains(Clang)) And $(Configuration.Contains(ReleaseLTCG))">/clang:-fmacro-prefix-map=&quot;$(SolutionDir)\&quot;=. /clang:-ffile-prefix-map=&quot;$(SolutionDir)\&quot;=. %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="$(Configuration.Contains(Clang)) And $(Configuration.Contains(ReleaseLTCG))">/clang:-ffile-prefix-map=&quot;$(SolutionDir)\&quot;= %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>