diff --git a/fio.h b/fio.h
index e7d5c27..0d7fbeb 100644
--- a/fio.h
+++ b/fio.h
@@ -420,6 +420,7 @@
 extern void add_job_opts(const char **, int);
 extern char *num2str(unsigned long, int, int, int, int);
 extern int ioengine_load(struct thread_data *);
+extern int parse_dryrun(void);
 
 extern uintptr_t page_mask;
 extern uintptr_t page_size;