diff --git a/daemon/.ycm_extra_conf.py b/daemon/.ycm_extra_conf.py
index fdad4fdd8..a08844f94 100644
--- a/daemon/.ycm_extra_conf.py
+++ b/daemon/.ycm_extra_conf.py
@@ -9,6 +9,15 @@ from clang_helpers import PrepareClangFlags
 # 'flags' list of compilation flags. Notice that YCM itself uses that approach.
 compilation_database_folder = ''
 
+repl_tmpl = '((x)[a]?((x)[b]+!):0)'
+csh_lookup_str = '!'
+
+for num in range(30):
+    t_str = repl_tmpl.replace('a', str(num)).replace('b', str(num+1))
+    csh_lookup_str = csh_lookup_str.replace('!', t_str)
+
+csh_lookup_str = csh_lookup_str.replace('!', '0')
+
 # These are the compilation flags that will be used in case there's no
 # compilation database set.
 flags = [
@@ -31,6 +40,8 @@ flags = [
     '-DWITH_IPTABLES_OPTION',
     '-DWITH_TRANSCODING',
     '-DHAVE_BCG729',
+    '-D__csh_lookup(x)=str_hash(x)',
+    '-DCSH_LOOKUP(x)=' + csh_lookup_str,
     '-O2',
     '-fstack-protector',
     '--param=ssp-buffer-size=4',