diff --git a/constants/font_encodings.cpp b/constants/font_encodings.cpp
index 4359701..9b2d09f 100644
--- a/constants/font_encodings.cpp
+++ b/constants/font_encodings.cpp
@@ -4,8 +4,7 @@
 
 #include "constants/font_encodings.h"
 
-namespace pdfium {
-namespace font_encodings {
+namespace pdfium::font_encodings {
 
 // ISO 32000-1:2008 spec, table D1.
 const char kMacRomanEncoding[] = "MacRomanEncoding";
@@ -13,5 +12,4 @@
 const char kPDFDocEncoding[] = "PDFDocEncoding";
 const char kMacExpertEncoding[] = "MacExpertEncoding";
 
-}  // namespace font_encodings
-}  // namespace pdfium
+}  // namespace pdfium::font_encodings