diff --git a/src/converter/BUILD.bazel b/src/converter/BUILD.bazel
index 48e03441c..77a5bc26b 100644
--- a/src/converter/BUILD.bazel
+++ b/src/converter/BUILD.bazel
@@ -439,6 +439,7 @@ mozc_cc_library(
         "//composer",
         "//dictionary:pos_matcher",
         "//dictionary:suppression_dictionary",
+        "//engine:modules",
         "//prediction:predictor_interface",
         "//protocol:commands_cc_proto",
         "//request:conversion_request",
diff --git a/src/converter/converter.cc b/src/converter/converter.cc
index b77dd7fff..0cc29dd0b 100644
--- a/src/converter/converter.cc
+++ b/src/converter/converter.cc
@@ -49,6 +49,7 @@
 #include "converter/segments.h"
 #include "dictionary/pos_matcher.h"
 #include "dictionary/suppression_dictionary.h"
+#include "engine/modules.h"
 #include "prediction/predictor_interface.h"
 #include "protocol/commands.pb.h"
 #include "request/conversion_request.h"
@@ -261,14 +262,13 @@ ConversionRequest CreateConversionRequestWithType(
 
 }  // namespace
 
-void Converter::Init(const PosMatcher *pos_matcher,
-                     const SuppressionDictionary *suppression_dictionary,
+void Converter::Init(const engine::Modules &modules,
                      std::unique_ptr<PredictorInterface> predictor,
                      std::unique_ptr<RewriterInterface> rewriter,
                      ImmutableConverterInterface *immutable_converter) {
   // Initializes in order of declaration.
-  pos_matcher_ = pos_matcher;
-  suppression_dictionary_ = suppression_dictionary;
+  pos_matcher_ = modules.GetPosMatcher();
+  suppression_dictionary_ = modules.GetSuppressionDictionary();
   predictor_ = std::move(predictor);
   rewriter_ = std::move(rewriter);
   immutable_converter_ = immutable_converter;
diff --git a/src/converter/converter.h b/src/converter/converter.h
index 831fa16a6..3f94607b3 100644
--- a/src/converter/converter.h
+++ b/src/converter/converter.h
@@ -45,6 +45,7 @@
 #include "converter/segments.h"
 #include "dictionary/pos_matcher.h"
 #include "dictionary/suppression_dictionary.h"
+#include "engine/modules.h"
 #include "prediction/predictor_interface.h"
 #include "request/conversion_request.h"
 #include "rewriter/rewriter_interface.h"
@@ -57,8 +58,7 @@ class Converter final : public ConverterInterface {
   Converter() = default;
 
   // Lazily initializes the internal members. Must be called before the use.
-  void Init(const dictionary::PosMatcher *pos_matcher,
-            const dictionary::SuppressionDictionary *suppression_dictionary,
+  void Init(const engine::Modules &modules,
             std::unique_ptr<prediction::PredictorInterface> predictor,
             std::unique_ptr<RewriterInterface> rewriter,
             ImmutableConverterInterface *immutable_converter);
diff --git a/src/converter/converter_test.cc b/src/converter/converter_test.cc
index 9372591b0..7e1188baa 100644
--- a/src/converter/converter_test.cc
+++ b/src/converter/converter_test.cc
@@ -260,8 +260,7 @@ class ConverterTest : public testing::TestWithTempUserProfile {
     auto predictor = CreatePredictor(predictor_type, modules.GetPosMatcher(),
                                      *converter_and_data);
     converter_and_data->converter->Init(
-        modules.GetPosMatcher(), modules.GetSuppressionDictionary(),
-        std::move(predictor), std::move(rewriter),
+        modules, std::move(predictor), std::move(rewriter),
         converter_and_data->immutable_converter.get());
   }
 
@@ -1183,7 +1182,7 @@ TEST_F(ConverterTest, VariantExpansionForSuggestion) {
   Converter converter;
   const DictionaryInterface *kNullDictionary = nullptr;
   converter.Init(
-      modules.GetPosMatcher(), modules.GetSuppressionDictionary(),
+      modules,
       DefaultPredictor::CreateDefaultPredictor(
           std::make_unique<DictionaryPredictor>(
               data_manager, &converter, immutable_converter.get(), modules),
diff --git a/src/engine/engine.cc b/src/engine/engine.cc
index 6afd7c5a2..fff422d46 100644
--- a/src/engine/engine.cc
+++ b/src/engine/engine.cc
@@ -198,9 +198,8 @@ absl::Status Engine::Init(
   RETURN_IF_NULL(rewriter);
   rewriter_ = rewriter.get();  // Keep the reference
 
-  converter_->Init(modules_.GetPosMatcher(),
-                   modules_.GetSuppressionDictionary(), std::move(predictor),
-                   std::move(rewriter), immutable_converter_.get());
+  converter_->Init(modules_, std::move(predictor), std::move(rewriter),
+                   immutable_converter_.get());
 
   user_data_manager_ = std::make_unique<UserDataManager>(predictor_, rewriter_);