diff --git a/libs/libc/include/time.h b/libs/libc/include/time.h
index 24091b27..c6180fd9 100644
--- a/libs/libc/include/time.h
+++ b/libs/libc/include/time.h
@@ -77,8 +77,8 @@ extern "C"
     /* Fills buf with a string representation of time. Thread-safe. */
     char* ctime_r(const time_t* time, char buf[26]);
 
-    size_t strftime(char* str, size_t max, const char* format, const struct tm* time); // Not implemented.
-    char* ctime(const time_t* timep);                                                  // Not implemented.
+    /* Fills str with a formatted string representation of time according to the format string. */
+    size_t strftime(char* str, size_t max, const char* format, const struct tm* time);
 
 #ifdef __cplusplus
 }