diff --git a/include/spdlog/details/tcp_client.h b/include/spdlog/details/tcp_client.h
index 0daff0eb4..45883f34d 100644
--- a/include/spdlog/details/tcp_client.h
+++ b/include/spdlog/details/tcp_client.h
@@ -16,6 +16,7 @@
 #include <unistd.h>
 #include <netdb.h>
 #include <netinet/tcp.h>
+#include <netinet/in.h>
 
 #include <string>