diff --git a/src/p7/main.c b/src/p7/main.c
index c11c888..4e1c62d 100644
--- a/src/p7/main.c
+++ b/src/p7/main.c
@@ -220,7 +220,7 @@ int main(int ac, char **av)
 
 			/* get capacity */
 			p7uint_t capacity;
-			err = p7_getcapacity(handle, args.storage, &capacity);
+			err = p7_getfreemem(handle, args.storage, &capacity);
 			if (err) break;
 
 			/* optimize if required */