diff --git a/src/node.cc b/src/node.cc
index 25a5f2c2754cbc..beeebe6923a18e 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -4305,14 +4305,6 @@ void Init(int* argc,
   // Make inherited handles noninheritable.
   uv_disable_stdio_inheritance();
 
-#if defined(NODE_HAVE_I18N_SUPPORT)
-  // Set the ICU casing flag early
-  // so the user can disable a flag --foo at run-time by passing
-  // --no_foo from the command line.
-  const char icu_case_mapping[] = "--icu_case_mapping";
-  V8::SetFlagsFromString(icu_case_mapping, sizeof(icu_case_mapping) - 1);
-#endif
-
 #if defined(NODE_V8_OPTIONS)
   // Should come before the call to V8::SetFlagsFromCommandLine()
   // so the user can disable a flag --foo at run-time by passing