diff --git a/core/internal/shell/extensions/execution/functions b/core/internal/shell/extensions/execution/functions
index 9f64a85d..8e896f77 100644
--- a/core/internal/shell/extensions/execution/functions
+++ b/core/internal/shell/extensions/execution/functions
@@ -3,7 +3,7 @@
 __sm.extension.actions.type()
 {
   typeset -g action_type
-  typeset _path _path_type extension shebang
+  typeset _path _path_type extension shebang binary
   _path="${action_path:-}"
 
   case "${action}" in
@@ -43,7 +43,7 @@ __sm.extension.actions.type()
 
           case "${shebang}" in
             *ruby|*rbx|*jruby|*macruby)
-              binary="${shebang##*(#|!)}"
+              binary="${shebang##*(\#|!)}"
               binary="${binary##* }"
               action_type="ruby"
               ;;
@@ -191,7 +191,10 @@ __sm.extension.run()
       requires=()
       for script in functions initialize
       do
-        requires+=( "-r${__sm_modules_path}/ruby/core/${script}.rb" )
+        if [[ -f "${__sm_modules_path}/ruby/core/${script}.rb" ]]
+        then
+          requires+=( "-r${__sm_modules_path}/ruby/core/${script}.rb" )
+        fi
       done
 
       exec "${binary:-ruby}" -I"${__sm_modules_path}/ruby" -I"${extension_modules_path}/ruby" \