diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 0968de04c9..bc36c89925 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -2062,7 +2062,7 @@ pub fn (mut c Checker) fn_call(mut call_expr ast.CallExpr) ast.Type {
 		&& func.mod != c.mod {
 		c.error('function `$func.name` is private', call_expr.pos)
 	}
-	if !c.cur_fn.is_deprecated && func.is_deprecated {
+	if c.cur_fn != 0 && !c.cur_fn.is_deprecated && func.is_deprecated {
 		c.deprecate_fnmethod('function', func.name, func, call_expr)
 	}
 	if func.is_unsafe && !c.inside_unsafe