diff --git a/src/flb_network.c b/src/flb_network.c
index 4caad9ef128..5d6937ca729 100644
--- a/src/flb_network.c
+++ b/src/flb_network.c
@@ -638,9 +638,9 @@ 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))
+#ifdef __GLIBC__
+            str = strerror_r(error, so_error_buf, sizeof(so_error_buf));
+#else
             ret = strerror_r(error, so_error_buf, sizeof(so_error_buf));
             if (ret == 0) {
                 str = so_error_buf;
@@ -649,8 +649,6 @@ static int net_connect_async(int fd,
                 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);