diff --git a/src/parse_options.c b/src/parse_options.c
index 099cf7a..d9b926f 100644
--- a/src/parse_options.c
+++ b/src/parse_options.c
@@ -21,6 +21,7 @@
 #include "ior.h"
 #include "aiori.h"
 #include "parse_options.h"
+#include "utilities.h"
 
 IOR_param_t initialTestParams;