diff --git a/gemma/tokenizer.cc b/gemma/tokenizer.cc
index 159be26..275e836 100644
--- a/gemma/tokenizer.cc
+++ b/gemma/tokenizer.cc
@@ -114,10 +114,6 @@ bool GemmaTokenizer::Decode(const std::vector<int>& ids,
   return impl_->Decode(ids, detokenized);
 }
 
-GemmaChatTemplate::GemmaChatTemplate(const GemmaTokenizer& tokenizer) {
-  Init(tokenizer);
-}
-
 void GemmaChatTemplate::Init(const GemmaTokenizer& tokenizer) {
   sot_user_.reserve(3);
   HWY_ASSERT(tokenizer.Encode("<start_of_turn>user\n", &sot_user_));
diff --git a/gemma/tokenizer.h b/gemma/tokenizer.h
index a5d329d..6cf5552 100644
--- a/gemma/tokenizer.h
+++ b/gemma/tokenizer.h
@@ -57,7 +57,9 @@ class GemmaTokenizer {
 class GemmaChatTemplate {
  public:
   GemmaChatTemplate() = default;
-  explicit GemmaChatTemplate(const GemmaTokenizer& tokenizer);
+  explicit GemmaChatTemplate(const GemmaTokenizer& tokenizer) {
+    Init(tokenizer);
+  }
 
   void Init(const GemmaTokenizer& tokenizer);
   std::vector<int> Apply(size_t pos, const std::vector<int>& ids) const;