diff --git a/samples/sample_c/platform/linux/common/osal/osal.c b/samples/sample_c/platform/linux/common/osal/osal.c
index 1cb0c22c..41f489ca 100644
--- a/samples/sample_c/platform/linux/common/osal/osal.c
+++ b/samples/sample_c/platform/linux/common/osal/osal.c
@@ -320,7 +320,7 @@ T_DjiReturnCode Osal_GetTimeUs(uint64_t *us)
     if (s_localTimeUsOffset == 0) {
         s_localTimeUsOffset = *us;
     } else {
-        *us = *us - s_localTimeMsOffset;
+        *us = *us - s_localTimeUsOffset;
     }
 
     return DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
@@ -344,4 +344,4 @@ void Osal_Free(void *ptr)
     free(ptr);
 }
 
-/****************** (C) COPYRIGHT DJI Innovations *****END OF FILE****/
\ No newline at end of file
+/****************** (C) COPYRIGHT DJI Innovations *****END OF FILE****/