diff --git a/src/parsing.c b/src/parsing.c
index fd3bd46..6500673 100644
--- a/src/parsing.c
+++ b/src/parsing.c
@@ -33,7 +33,7 @@ char *parsing(char * const *av, struct param parameters[])
                 parameter->value = (void*)true;
             else
             {
-                if (av[i] == NULL)
+                if (av[i + 1] == NULL)
                 {
                     print_err("%s: requirement argument", av[i]);
                     return NULL;