diff --git a/porting/liteos_m/kernel/src/stdio/fclose.c b/porting/liteos_m/kernel/src/stdio/fclose.c
index 46c2cdb32e02cac01bf056d519313093ac47e8ab..9569c8ffebe2398f21967268da09ce9a4f92f967 100644
--- a/porting/liteos_m/kernel/src/stdio/fclose.c
+++ b/porting/liteos_m/kernel/src/stdio/fclose.c
@@ -29,6 +29,8 @@ int __fclose(FILE *f)
 	if (*head == f) *head = f->next;
 	__ofl_unlock();
 
+	pthread_mutex_destroy(f->lock);
+
 	free(f->getln_buf);
 	free(f);