diff --git a/jedi/evaluate/representation.py b/jedi/evaluate/representation.py
index dffac8c2..76fbf19a 100644
--- a/jedi/evaluate/representation.py
+++ b/jedi/evaluate/representation.py
@@ -101,6 +101,9 @@ class Instance(use_metaclass(CachedMetaClass, Executed)):
             else:
                 evaluator.execute(method, self.var_args)
 
+    def is_class(self):
+        return False
+
     @property
     def py__call__(self):
         def actual(params):
diff --git a/test/completion/isinstance.py b/test/completion/isinstance.py
index df275b05..f10d09f4 100644
--- a/test/completion/isinstance.py
+++ b/test/completion/isinstance.py
@@ -83,3 +83,10 @@ class Test():
             self.testing
             #? Test()
             self
+
+# -----------------
+# Syntax
+# -----------------
+
+#?
+isinstance(1, int())