diff --git a/src/MESA_handle_logger.c b/src/MESA_handle_logger.c
index c9cc54b..b12e193 100644
--- a/src/MESA_handle_logger.c
+++ b/src/MESA_handle_logger.c
@@ -212,6 +212,10 @@ void MESA_handle_runtime_log(void *handle, int level, const char *module, const
         fclose(p_handle->fp);
         p_handle->fp = NULL;
     }
+    else
+    {
+        fflush(p_handle->fp);
+    }
     return;
 }