diff --git a/src/if_python.c b/src/if_python.c
index 34a75a6..c95cb5d 100644
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -803,6 +803,8 @@
 # define PY_STRSAVE(s) ((char_u *) py_memsave(s, STRLEN(s) + 1))
 #endif
 
+typedef PySliceObject PySliceObject_T;
+
 /*
  * Include the code shared with if_python3.c
  */