diff --git a/Lib/javascript/v8/javascriptruntime.swg b/Lib/javascript/v8/javascriptruntime.swg
index 3ccbbd5b7..ea11b0837 100644
--- a/Lib/javascript/v8/javascriptruntime.swg
+++ b/Lib/javascript/v8/javascriptruntime.swg
@@ -6,9 +6,10 @@
 // V8 Version Macro
 // ----------------
 // v8 does not (until now) provide a version macro - which is still discussed and may come soon.
-// Until then, we set a default version which can be overridden via command line or via a define in
-// the SWIG configuration.
-// For example, `swig -javascript -v8 -DV8_VERSION=0x031110`
+// Until then, we set a default version which can be overridden via command line using V8_VERSION:
+//   swig -javascript -v8 -DV8_VERSION=0x031110
+// Or code in the interface file using SWIG_V8_VERSION:
+//   %begin %{#define SWIG_V8_VERSION 0x031110%}
 
 %define %swig_v8_define_version(version)
 %insert("runtime") %{
diff --git a/Source/Modules/javascript.cxx b/Source/Modules/javascript.cxx
index 5ec42c9c6..93c21645f 100644
--- a/Source/Modules/javascript.cxx
+++ b/Source/Modules/javascript.cxx
@@ -1559,6 +1559,8 @@ int JSCEmitter::initialize(Node *n) {
   Swig_register_filebyname("runtime", f_runtime);
   Swig_register_filebyname("init", f_init);
 
+  Swig_banner(f_wrap_cpp);
+
   return SWIG_OK;
 }
 
@@ -1566,9 +1568,6 @@ int JSCEmitter::dump(Node *n) {
   /* Get the module name */
   String *module = Getattr(n, "name");
 
-  // write the SWIG banner
-  Swig_banner(f_wrap_cpp);
-
   Template initializer_define(getTemplate("js_initializer_define"));
   initializer_define.replace("$jsname", module).pretty_print(f_header);
 
@@ -1890,6 +1889,8 @@ int V8Emitter::initialize(Node *n) {
 
   state.globals(FORCE_CPP, NewString("1"));
 
+  Swig_banner(f_wrap_cpp);
+
   return SWIG_OK;
 }
 
@@ -1897,9 +1898,6 @@ int V8Emitter::dump(Node *n) {
   /* Get the module name */
   String *module = Getattr(n, "name");
 
-  // write the SWIG banner
-  Swig_banner(f_wrap_cpp);
-
   Template initializer_define(getTemplate("js_initializer_define"));
   initializer_define.replace("$jsname", module).pretty_print(f_header);