diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 9d3ff02c55c..dc7a16d1e26 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -309,6 +309,9 @@ class SyntaxTestCase(unittest.TestCase):
                           "unindent does not match .* level",
                           subclass=IndentationError)
 
+    def test_kwargs_last(self):
+        self._check_error("int(base=10, '2')", "non-keyword arg")
+
 def test_main():
     test_support.run_unittest(SyntaxTestCase)
     from test import test_syntax
diff --git a/Python/ast.c b/Python/ast.c
index fafa25310b9..96645900552 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -1750,6 +1750,11 @@ ast_for_call(struct compiling *c, const node *n, expr_ty func)
 	if (TYPE(ch) == argument) {
 	    expr_ty e;
 	    if (NCH(ch) == 1) {
+		if (nkeywords) {
+		    ast_error(CHILD(ch, 0),
+			      "non-keyword arg after keyword arg");
+		    return NULL;
+		}
 		e = ast_for_expr(c, CHILD(ch, 0));
                 if (!e)
                     return NULL;