diff --git a/UltiSnips/rails.snippets b/UltiSnips/rails.snippets
index 9f36116..9e0e29f 100644
--- a/UltiSnips/rails.snippets
+++ b/UltiSnips/rails.snippets
@@ -3,7 +3,7 @@
 ###########################################################################
 
 snippet anaf "accepts_nested_attributes_for"
-accepts_nested_attributes_for :${1:association_name}${2:${3:, :allow_destroy => true}${4:, :reject_if => proc { |obj| ${5:obj.blank?} \}}}
+accepts_nested_attributes_for :${1:association_name}${2:${3:, :allow_destroy => true}${4:, :reject_if => proc \{ |obj| ${5:obj.blank?} \}}}
 
 endsnippet
 
diff --git a/UltiSnips/ruby.snippets b/UltiSnips/ruby.snippets
index aaddac3..3a4ba77 100644
--- a/UltiSnips/ruby.snippets
+++ b/UltiSnips/ruby.snippets
@@ -84,7 +84,7 @@ endsnippet
 
 
 
-snippet "(de)?f" "def <name>..." r
+snippet "\b(de)?f" "def <name>..." r
 def ${1:function_name}${2: ${3:*args}}
 	${4:# TODO$0}
 end