diff --git a/.gitmodules b/.gitmodules
index 83d74abf868..28cbaf76f21 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -238,3 +238,6 @@
 [submodule "contrib/wordnet-blast"]
 	path = contrib/wordnet-blast
 	url = git@github.com:evillique/wordnet-blast.git
+[submodule "contrib/lemmagen-c"]
+	path = contrib/lemmagen-c
+	url = https://github.com/evillique/lemmagen-c.git
diff --git a/contrib/lemmagen-c b/contrib/lemmagen-c
new file mode 160000
index 00000000000..75852f6d94c
--- /dev/null
+++ b/contrib/lemmagen-c
@@ -0,0 +1 @@
+Subproject commit 75852f6d94c63842d28501f79e5beda0c443c572
diff --git a/src/Functions/tokenize.cpp b/src/Functions/tokenize.cpp
index 04ed799b2ef..9fe42f463c4 100644
--- a/src/Functions/tokenize.cpp
+++ b/src/Functions/tokenize.cpp
@@ -102,13 +102,9 @@ public:
     }
 };
 
-void registerFunctionTokenize(FunctionFactory & factory)
+void registerFunctionsTokenize(FunctionFactory & factory)
 {
     factory.registerFunction<FunctionTokenize<StandartTokenizer>>(FunctionFactory::CaseInsensitive);
-}
-
-void registerFunctionTokenizeWhitespace(FunctionFactory & factory)
-{
     factory.registerFunction<FunctionTokenize<WhitespaceTokenizer>>(FunctionFactory::CaseInsensitive);
 }