diff --git a/hy/_compat.py b/hy/_compat.py
index 60dfe6f..3c5b7d9 100644
--- a/hy/_compat.py
+++ b/hy/_compat.py
@@ -50,7 +50,7 @@ def isidentifier(x):
     if x.rstrip() != x:
         return False
     import tokenize as T
-    from StringIO import StringIO
+    from io import StringIO
     try:
         tokens = list(T.generate_tokens(StringIO(x).readline))
     except T.TokenError: