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-rw-r--r--lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c b/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
index b91dca61d4..96938f9071 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
+++ b/lib/kernel/test/gen_tcp_api_SUITE_data/gen_tcp_api_SUITE.c
@@ -30,6 +30,7 @@
#define sock_close(s) closesocket(s)
#else
#include <sys/socket.h>
+#include <unistd.h>
#define sock_close(s) close(s)
#endif