diff --git a/core/shared/platform/zephyr/platform_internal.h b/core/shared/platform/zephyr/platform_internal.h
index d5f0c80d81..134b5c2b5f 100644
--- a/core/shared/platform/zephyr/platform_internal.h
+++ b/core/shared/platform/zephyr/platform_internal.h
@@ -290,7 +290,9 @@ typedef struct timespec os_timespec;
 #define CLOCK_REALTIME 1
 #endif
 
+#ifndef CLOCK_MONOTONIC
 #define CLOCK_MONOTONIC 4
+#endif
 
 static inline int
 os_sched_yield(void)
diff --git a/core/shared/platform/zephyr/zephyr_file.c b/core/shared/platform/zephyr/zephyr_file.c
index 1f48bc010c..79b6756e3f 100644
--- a/core/shared/platform/zephyr/zephyr_file.c
+++ b/core/shared/platform/zephyr/zephyr_file.c
@@ -6,6 +6,7 @@
 #include "platform_api_vmcore.h"
 #include "platform_api_extension.h"
 #include "libc_errno.h"
+#include "bh_common.h"
 
 #include <string.h>
 #include <stdlib.h>
@@ -1195,4 +1196,4 @@ bool
 os_is_stderr_handle(os_file_handle handle)
 {
     return (handle == (os_file_handle)stderr);
-}
\ No newline at end of file
+}