diff --git a/src/internal/mdso_driver_impl.h b/src/internal/mdso_driver_impl.h
index a697528..f5b0620 100644
--- a/src/internal/mdso_driver_impl.h
+++ b/src/internal/mdso_driver_impl.h
@@ -8,6 +8,7 @@
 #include <mdso/mdso.h>
 #include "argv/argv.h"
 
+extern int mdso_main(int, char **, char **);
 extern const struct argv_option mdso_default_options[];
 
 enum app_tags {
diff --git a/src/mdso.c b/src/mdso.c
index 5cbcfce..4f01518 100644
--- a/src/mdso.c
+++ b/src/mdso.c
@@ -9,6 +9,7 @@
 #include <mdso/mdso.h>
 #include <mdso/mdso_output.h>
 #include "mdso_version.h"
+#include "mdso_driver_impl.h"
 
 #ifndef MDSO_DRIVER_FLAGS
 #define MDSO_DRIVER_FLAGS	MDSO_DRIVER_VERBOSITY_ERRORS \