diff --git a/fpdfsdk/fpdf_edit_embeddertest.cpp b/fpdfsdk/fpdf_edit_embeddertest.cpp
index 8c75afc..86a73e3 100644
--- a/fpdfsdk/fpdf_edit_embeddertest.cpp
+++ b/fpdfsdk/fpdf_edit_embeddertest.cpp
@@ -2650,7 +2650,7 @@
 }
 
 // TODO(npm): Add tests using Japanese fonts in other OS.
-#if _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#if defined(OS_LINUX)
 // TODO(crbug.com/pdfium/11): Fix this test and enable.
 #if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
 #define MAYBE_AddCIDFontText DISABLED_AddCIDFontText
@@ -2709,7 +2709,7 @@
 
   VerifySavedDocument(612, 792, md5);
 }
-#endif  // _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#endif  // defined(OS_LINUX)
 
 // TODO(crbug.com/pdfium/11): Fix this test and enable.
 #if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
diff --git a/xfa/fwl/cfwl_edit_embeddertest.cpp b/xfa/fwl/cfwl_edit_embeddertest.cpp
index 9253293..6936b38 100644
--- a/xfa/fwl/cfwl_edit_embeddertest.cpp
+++ b/xfa/fwl/cfwl_edit_embeddertest.cpp
@@ -157,11 +157,11 @@
   // abcde
   // fghij|
   {
-#if _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#if defined(OS_LINUX)
     const char kFilledMultilineMD5[] = "fc1f4d5fdb2c5755005fc525b0a60ec9";
 #else
     const char kFilledMultilineMD5[] = "a5654e027d8b1667c20f3b86d1918003";
-#endif  // _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#endif  // defined(OS_LINUX)
     ScopedFPDFBitmap page_bitmap =
         RenderLoadedPageWithFlags(page(), FPDF_ANNOT);
     CompareBitmap(page_bitmap.get(), 612, 792, kFilledMultilineMD5);
@@ -182,11 +182,11 @@
   // Should look like:
   // abcde|ghij
   {
-#if _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#if defined(OS_LINUX)
     const char kMultilineBackspaceMD5[] = "8bb62a8100ff1e1cc113d4033e0d824e";
 #else
     const char kMultilineBackspaceMD5[] = "a2f1dcab92bb1fb7c2f9ccc70100c989";
-#endif  // _FX_PLATFORM_ == _FX_PLATFORM_LINUX_
+#endif  // defined(OS_LINUX)
     ScopedFPDFBitmap page_bitmap =
         RenderLoadedPageWithFlags(page(), FPDF_ANNOT);
     CompareBitmap(page_bitmap.get(), 612, 792, kMultilineBackspaceMD5);