diff --git a/external/easylogging++/easylogging++.h b/external/easylogging++/easylogging++.h
index dcf16a75..68864845 100644
--- a/external/easylogging++/easylogging++.h
+++ b/external/easylogging++/easylogging++.h
@@ -5092,7 +5092,19 @@ ELPP_LITERAL("(") << elem->first << ELPP_LITERAL(", ") << elem->second << ELPP_L
             }
             
             template <typename T>
-            inline Writer& operator<<(const T& log) {
+            inline typename std::enable_if<std::is_integral<T>::value, Writer&>::type
+            operator<<(T log) {
+#if ELPP_LOGGING_ENABLED
+                if (m_proceed) {
+                    m_messageBuilder << log;
+                }
+#endif  // ELPP_LOGGING_ENABLED
+                return *this;
+            }
+
+            template <typename T>
+            inline typename std::enable_if<!std::is_integral<T>::value, Writer&>::type
+            operator<<(const T& log) {
 #if ELPP_LOGGING_ENABLED
                 if (m_proceed) {
                     m_messageBuilder << log;