diff --git a/src/WINNT/afsd/cm_btree.h b/src/WINNT/afsd/cm_btree.h
index 7a7166e613..8a7f73363d 100644
--- a/src/WINNT/afsd/cm_btree.h
+++ b/src/WINNT/afsd/cm_btree.h
@@ -78,7 +78,7 @@ typedef struct leaf {
     Nptr	nextNode;
 } Leaf;
 
-typedef struct data {
+typedef struct btree_data {
     keyT        key;
     dataT	value;
     Nptr        next;