diff --git a/study/study.c b/study/study.c
index 9eedc3c..40f42b6 100644
--- a/study/study.c
+++ b/study/study.c
@@ -9,7 +9,9 @@ uint8_t study_get_class(void)
 	return g_class;
 }
 
-uint8_t study_sign_in(char *name, char *time)
+
+
+uint8_t study_homework(void)
 {
 	
 }
\ No newline at end of file
diff --git a/study/study.h b/study/study.h
index 1dbbedd..7f44718 100644
--- a/study/study.h
+++ b/study/study.h
@@ -2,4 +2,5 @@
 
 void study_set_class(uint8_t class);
 uint8_t study_get_class(void);
-uint8_t study_sign_in(char *name, char *time);
\ No newline at end of file
+
+uint8_t study_homework(void);
\ No newline at end of file