diff --git a/src/log/FileLog.cpp b/src/log/FileLog.cpp
index b08cd2038..a1e801593 100644
--- a/src/log/FileLog.cpp
+++ b/src/log/FileLog.cpp
@@ -41,7 +41,7 @@
 FileLog::FileLog(const char *fileName)
 {
     uv_fs_t req;
-    m_file = uv_fs_open(uv_default_loop(), &req, fileName, O_CREAT | O_APPEND, 0644, nullptr);
+    m_file = uv_fs_open(uv_default_loop(), &req, fileName, O_CREAT | O_APPEND | O_WRONLY, 0644, nullptr);
     uv_fs_req_cleanup(&req);
 }
 
diff --git a/src/log/Log.cpp b/src/log/Log.cpp
index 6d509ae71..541486ebd 100644
--- a/src/log/Log.cpp
+++ b/src/log/Log.cpp
@@ -44,23 +44,27 @@ Log *Log::m_self = nullptr;
 void Log::message(Log::Level level, const char* fmt, ...)
 {
     va_list args;
+    va_list copy;
     va_start(args, fmt);
 
     for (ILogBackend *backend : m_backends) {
-        backend->message(level, fmt, args);
+        va_copy(copy, args);
+        backend->message(level, fmt, copy);
+        va_end(copy);
     }
-
-    va_end(args);
 }
 
 
 void Log::text(const char* fmt, ...)
 {
     va_list args;
+    va_list copy;
     va_start(args, fmt);
 
     for (ILogBackend *backend : m_backends) {
-        backend->text(fmt, args);
+        va_copy(copy, args);
+        backend->text(fmt, copy);
+        va_end(copy);
     }
 
     va_end(args);