diff --git a/crates/voicevox_core/src/lib.rs b/crates/voicevox_core/src/lib.rs
index 3ad352486..798515fb9 100644
--- a/crates/voicevox_core/src/lib.rs
+++ b/crates/voicevox_core/src/lib.rs
@@ -13,10 +13,10 @@ mod metas;
 mod numerics;
 mod result;
 mod status;
+mod synthesizer;
 mod user_dict;
 mod version;
 mod voice_model;
-mod voice_synthesizer;
 
 #[doc(hidden)]
 pub mod __internal;
@@ -36,9 +36,9 @@ pub use self::result::*;
 pub use self::voice_model::*;
 pub use devices::*;
 pub use manifest::*;
+pub use synthesizer::*;
 pub use user_dict::*;
 pub use version::*;
-pub use voice_synthesizer::*;
 
 use derive_getters::*;
 use derive_new::new;
diff --git a/crates/voicevox_core/src/voice_synthesizer.rs b/crates/voicevox_core/src/synthesizer.rs
similarity index 100%
rename from crates/voicevox_core/src/voice_synthesizer.rs
rename to crates/voicevox_core/src/synthesizer.rs
diff --git a/crates/voicevox_core_c_api/tests/e2e/log_mask.rs b/crates/voicevox_core_c_api/tests/e2e/log_mask.rs
index 76e01951f..ce364c1be 100644
--- a/crates/voicevox_core_c_api/tests/e2e/log_mask.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/log_mask.rs
@@ -23,7 +23,7 @@ impl Utf8Output {
     pub(crate) fn mask_windows_video_cards(self) -> Self {
         self.mask_stderr(
             static_regex!(
-                r#"(?m)^\{timestamp\}  INFO voicevox_core::voice_synthesizer: 検出されたGPU \(DirectMLには1番目のGPUが使われます\):(\n\{timestamp\}  INFO voicevox_core::voice_synthesizer:   - "[^"]+" \([0-9.]+ [a-zA-Z]+\))+"#,
+                r#"(?m)^\{timestamp\}  INFO voicevox_core::synthesizer: 検出されたGPU \(DirectMLには1番目のGPUが使われます\):(\n\{timestamp\}  INFO voicevox_core::synthesizer:   - "[^"]+" \([0-9.]+ [a-zA-Z]+\))+"#,
             ),
             "{windows-video-cards}",
         )