diff --git a/.gitignore b/.gitignore
index f09b26dfe7dfa21a1cbb131ac52e6c59b2344710..1202eabefaef53bca0ec6069fd3fc9718a06c4b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 .settings
 *~
 .*.sw[po]
+.sw[po]
 *.dat
 *.pyc
 build
diff --git a/islpy/__init__.py b/islpy/__init__.py
index cd771c1e8e2d00df400d93725f30705e489af89d..d2a05087249a5ff6cb2691ae68fb4db39200c08b 100644
--- a/islpy/__init__.py
+++ b/islpy/__init__.py
@@ -144,7 +144,7 @@ def _add_functionality():
         """
         result = {}
 
-        def set_dim_name(name, tp, idx):
+        def set_dim_id(name, tp, idx):
             if name in result:
                 raise RuntimeError("non-unique var id '%s' encountered" % name)
             result[name] = tp, idx
diff --git a/test/test_isl.py b/test/test_isl.py
index a7b502865c65427e09e1438b2b6108965c66c2ec..867464d5765080f7cbca4868e096893efc6bf9ac 100644
--- a/test/test_isl.py
+++ b/test/test_isl.py
@@ -87,6 +87,10 @@ def test_pickling():
         assert inst.plain_is_equal(inst2)
 
 
+def test_get_id_dict():
+    print(isl.Set("[a] -> {[b]}").get_id_dict(isl.dim_type.param))
+
+
 if __name__ == "__main__":
     import sys
     if len(sys.argv) > 1: