diff --git a/ebtree/eb32tree.h b/ebtree/eb32tree.h
index 08ff900..8c1a470 100644
--- a/ebtree/eb32tree.h
+++ b/ebtree/eb32tree.h
@@ -110,12 +110,12 @@
  * The following functions are not inlined by default. They are declared
  * in eb32tree.c, which simply relies on their inline version.
  */
-REGPRM2 struct eb32_node *eb32_lookup(struct eb_root *root, u32 x);
-REGPRM2 struct eb32_node *eb32i_lookup(struct eb_root *root, s32 x);
-REGPRM2 struct eb32_node *eb32_lookup_le(struct eb_root *root, u32 x);
-REGPRM2 struct eb32_node *eb32_lookup_ge(struct eb_root *root, u32 x);
-REGPRM2 struct eb32_node *eb32_insert(struct eb_root *root, struct eb32_node *new);
-REGPRM2 struct eb32_node *eb32i_insert(struct eb_root *root, struct eb32_node *new);
+struct eb32_node *eb32_lookup(struct eb_root *root, u32 x);
+struct eb32_node *eb32i_lookup(struct eb_root *root, s32 x);
+struct eb32_node *eb32_lookup_le(struct eb_root *root, u32 x);
+struct eb32_node *eb32_lookup_ge(struct eb_root *root, u32 x);
+struct eb32_node *eb32_insert(struct eb_root *root, struct eb32_node *new);
+struct eb32_node *eb32i_insert(struct eb_root *root, struct eb32_node *new);
 
 /*
  * The following functions are less likely to be used directly, because their