diff --git a/Lib/python/pyruntime.swg b/Lib/python/pyruntime.swg
index d00dffa60..4294747b6 100644
--- a/Lib/python/pyruntime.swg
+++ b/Lib/python/pyruntime.swg
@@ -5,8 +5,8 @@
 
 %insert(runtime) "swigrun.swg";         /* SWIG API */
 %insert(runtime) "swigerrors.swg";      /* SWIG errors */   
-%insert(runtime) "pyhead.swg";
-%insert(runtime) "pyerrors.swg";
+%insert(runtime) "pyhead.swg";          /* Python includes and fixes */
+%insert(runtime) "pyerrors.swg";        /* Python errors */
 %insert(runtime) "pythreads.swg";       /* Python thread code */
 %insert(runtime) "pyapi.swg";           /* Pyton API */
 %insert(runtime) "pyrun.swg";           /* Python run-time code */
diff --git a/Lib/ruby/rubyruntime.swg b/Lib/ruby/rubyruntime.swg
index 31d741b8b..412156148 100644
--- a/Lib/ruby/rubyruntime.swg
+++ b/Lib/ruby/rubyruntime.swg
@@ -2,8 +2,8 @@
 %runtime "swiglabels.swg"    /* Common C API type-checking code */
 %runtime "swigrun.swg"       /* Common C API type-checking code */
 %runtime "swigerrors.swg"    /* SWIG errors */   
-%runtime "rubyhead.swg"
-%runtime "rubyerrors.swg"
+%runtime "rubyhead.swg"      /* Ruby includes and fixes */   
+%runtime "rubyerrors.swg"    /* Ruby errors */   
 %runtime "rubytracking.swg"  /* API for tracking C++ classes to Ruby objects */
 %runtime "rubyapi.swg"
 %runtime "rubyrun.swg"