diff --git a/tools/shared.h b/tools/shared.h
index 97d5abab..dd50fb4e 100644
--- a/tools/shared.h
+++ b/tools/shared.h
@@ -26,6 +26,7 @@
 
 #include <stdbool.h>
 #include <limits.h>
+#include <getopt.h>
 
 #include <quirks.h>
 #include <libinput.h>