diff --git a/Makefile b/Makefile
index 957517e9e..2d76c7945 100644
--- a/Makefile
+++ b/Makefile
@@ -270,6 +270,9 @@ clean: clean_c clean_musl
 	rm -rf $(APP)/*.bin $(APP)/*.elf
 	cargo clean
 
+clean_c::
+	rm -rf $(app-objs)
+
 clean_musl:
 	rm -rf ulib/ruxmusl/build_*
 	rm -rf ulib/ruxmusl/install
diff --git a/ulib/include/ax_pthread_cond.h b/ulib/include/ax_pthread_cond.h
index e5179cef9..96fd090f1 100644
--- a/ulib/include/ax_pthread_cond.h
+++ b/ulib/include/ax_pthread_cond.h
@@ -1,6 +1,6 @@
 // Generated by ruxos_posix_api/build.rs, DO NOT edit!
 
 typedef struct {
-    long __l[5];
+    long __l[4];
 } pthread_cond_t;
 
diff --git a/ulib/include/ax_pthread_mutex.h b/ulib/include/ax_pthread_mutex.h
index 59a6b494e..e9e391a9e 100644
--- a/ulib/include/ax_pthread_mutex.h
+++ b/ulib/include/ax_pthread_mutex.h
@@ -1,8 +1,8 @@
 // Generated by ruxos_posix_api/build.rs, DO NOT edit!
 
 typedef struct {
-    long __l[6];
+    long __l[5];
 } pthread_mutex_t;
 
-#define PTHREAD_MUTEX_INITIALIZER { .__l = {0, 8, 0, 0, 0, 0}}
+#define PTHREAD_MUTEX_INITIALIZER { .__l = {8, 0, 0, 0, 0}}