diff --git a/python/psutil/psutil/_psutil_posix.c b/python/psutil/psutil/_psutil_posix.c
index 183dab0e12..daf11cd332 100644
--- a/python/psutil/psutil/_psutil_posix.c
+++ b/python/psutil/psutil/_psutil_posix.c
@@ -23,6 +23,7 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <net/if_dl.h>
+#include <sys/ioctl.h>
 #endif
 
 #if defined(__sun)