diff --git a/autoload/jedi.vim b/autoload/jedi.vim
index 3af30b7..91b436d 100644
--- a/autoload/jedi.vim
+++ b/autoload/jedi.vim
@@ -307,7 +307,7 @@ let s:settings = {
     \ 'popup_on_dot': 1,
     \ 'documentation_command': "'K'",
     \ 'show_call_signatures': 1,
-    \ 'call_signature_escape': "'=='",
+    \ 'call_signature_escape': "'=`='",
     \ 'auto_close_doc': 1,
     \ 'popup_select_first': 1,
     \ 'quickfix_window_height': 10,
diff --git a/test/signatures.vim b/test/signatures.vim
index 91db812..315e9c6 100644
--- a/test/signatures.vim
+++ b/test/signatures.vim
@@ -15,7 +15,7 @@ describe 'signatures'
         " equals doautocmd CursorMovedI
         Python jedi_vim.show_call_signatures()
 
-        Expect getline(1) == '==jedi=0, ==   (*number*) ==jedi=='
+        Expect getline(1) == '=`=jedi=0, =`=   (*number*) =`=jedi=`='
 
         doautocmd InsertLeave 
         Expect getline(1) == ''