diff --git a/build_overrides/pdfium.gni b/build_overrides/pdfium.gni
index 85f15e6..b7dc9e0 100644
--- a/build_overrides/pdfium.gni
+++ b/build_overrides/pdfium.gni
@@ -17,10 +17,6 @@
 # Default: Without XFA support.
 pdf_enable_xfa_override = false
 
-# Build PDFium using C++20 if set to true. Otherwise builds with C++17.
-# Default: True for Windows component builds.
-pdf_use_cxx20_override = is_win && is_component_build
-
 # Build PDFium with PartitionAlloc support, directing `fxcrt` to use
 # it as its memory allocator in lieu of `malloc()`.
 # Default: Use PartitionAlloc when building with Clang.
diff --git a/pdfium.gni b/pdfium.gni
index 72c42fe..a7271fc 100644
--- a/pdfium.gni
+++ b/pdfium.gni
@@ -36,8 +36,10 @@
   # If XFA, also support tiff codec. Ignored if not XFA.
   pdf_enable_xfa_tiff = true
 
-  # Build PDFium with C++20.
-  pdf_use_cxx20 = pdf_use_cxx20_override
+  # Build PDFium using C++20 if set to true. Otherwise builds with C++17.
+  # There is no "pdf_use_cxx20_override" variable because this is only used in
+  # standalone PDFium, and not when PDFium is embedded in our projects.
+  pdf_use_cxx20 = is_win && is_component_build
 
   # Build PDFium with PartitionAlloc as the memory allocator.
   pdf_use_partition_alloc = pdf_use_partition_alloc_override