diff --git a/src/flb_network.c b/src/flb_network.c
index 13c8ecb27e8..627608764fd 100644
--- a/src/flb_network.c
+++ b/src/flb_network.c
@@ -543,7 +543,20 @@ static int net_connect_async(int fd,
             }
 
             /* Connection is broken, not much to do here */
+#if ((defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) ||    \
+     (defined(_XOPEN_SOURCE) || _XOPEN_SOURCE - 0L >= 600L)) &&     \
+  (!defined(_GNU_SOURCE))
+            ret = strerror_r(error, so_error_buf, sizeof(so_error_buf));
+            if (ret == 0) {
+                str = so_error_buf;
+            }
+            else {
+                flb_errno();
+                return -1;
+            }
+#else
             str = strerror_r(error, so_error_buf, sizeof(so_error_buf));
+#endif
             flb_error("[net] TCP connection failed: %s:%i (%s)",
                       u->tcp_host, u->tcp_port, str);
             return -1;