diff --git a/Source/LanguageModelManager.h b/Source/LanguageModelManager.h
index 654bee08..ad75814d 100644
--- a/Source/LanguageModelManager.h
+++ b/Source/LanguageModelManager.h
@@ -28,7 +28,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface LanguageModelManager : NSObject
 
-+ (void)loadDataModels;
 + (void)loadDataModel:(InputMode)mode;
 + (void)loadUserPhrases;
 + (void)loadUserPhraseReplacement;
@@ -45,4 +44,9 @@ NS_ASSUME_NONNULL_BEGIN
 
 @end
 
+/// The following methods are merely for testing.
+@interface LanguageModelManager ()
++ (void)loadDataModels;
+@end
+
 NS_ASSUME_NONNULL_END