diff --git a/src/include/options-generator.c b/src/include/options-generator.c
index c4ae6040..aa2ff8f5 100644
--- a/src/include/options-generator.c
+++ b/src/include/options-generator.c
@@ -29,6 +29,7 @@
 #include <ctype.h>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <errno.h>
 
 #define MAX_ARGS 3