diff --git a/src/obiview.c b/src/obiview.c
index f68d82b..f51c024 100644
--- a/src/obiview.c
+++ b/src/obiview.c
@@ -111,7 +111,7 @@ size_t get_platform_header_size()
 }
 
 
-size_t get_platform_views_size(nb_of_views)
+size_t get_platform_views_size(int nb_of_views)
 {
 	size_t obiview_size;
 	size_t rounded_obiview_size;