diff --git a/Include/cStringIO.h b/Include/cStringIO.h
index c1328de0d8c..73894329345 100644
--- a/Include/cStringIO.h
+++ b/Include/cStringIO.h
@@ -65,7 +65,7 @@
   Before calling any of the functions or macros, you must initialize
   the routines with:
 
-    PycStringIO_IMPORT
+    PycString_IMPORT
 
   This would typically be done in your init function.