diff --git a/c_src/towerops_nif.c b/c_src/towerops_nif.c
index cc257853..65627bfe 100644
--- a/c_src/towerops_nif.c
+++ b/c_src/towerops_nif.c
@@ -2,6 +2,7 @@
 // Directly links to libnetsnmp without Rust layer
 
 #include <erl_nif.h>
+#include <sys/types.h>
 #include <net-snmp/net-snmp-config.h>
 #include <net-snmp/net-snmp-includes.h>
 #include <string.h>