diff --git a/src/tests/test-security-context.c b/src/tests/test-security-context.c
index c95814510..97e45a913 100644
--- a/src/tests/test-security-context.c
+++ b/src/tests/test-security-context.c
@@ -6,6 +6,7 @@
 #include <sys/socket.h>
 #include <fcntl.h>
 #include <limits.h>
+#include <unistd.h>
 
 #include <pipewire/pipewire.h>
 #include <pipewire/main-loop.h>