diff --git a/ext/dl/dl.def b/ext/dl/dl.def
index 75da180a7a..cf50b09464 100644
--- a/ext/dl/dl.def
+++ b/ext/dl/dl.def
@@ -4,7 +4,6 @@ dlfree
 dlmalloc
 dlrealloc
 dlstrdup
-rb_ary2cary
 rb_ary_to_ptr
 rb_dl_dlopen
 rb_dl_get_callback
@@ -17,7 +16,6 @@ rb_io_to_ptr
 rb_mDL
 rb_str_to_ptr
 Init_dlhandle
-dlhandle_free
 rb_cDLHandle
 rb_dlhandle_close
 rb_dlhandle_disable_close
@@ -26,12 +24,10 @@ rb_dlhandle_init
 rb_dlhandle_s_new
 rb_dlhandle_sym
 Init_dlptr
-dlptr_free
-dlptr_init
 rb_cDLPtrData
 rb_dlmem_each
 rb_dlptr2cptr
-rb_dlptr_alloc
+rb_dlptr_malloc
 rb_dlptr_aref
 rb_dlptr_aset
 rb_dlptr_cmp
@@ -45,6 +41,7 @@ rb_dlptr_get_data_type
 rb_dlptr_inspect
 rb_dlptr_minus
 rb_dlptr_new
+rb_dlptr_new2
 rb_dlptr_null_p
 rb_dlptr_plus
 rb_dlptr_ptr
@@ -55,7 +52,6 @@ rb_dlptr_to_s
 rb_dlptr_to_str
 rb_mDLMemorySpace
 Init_dlsym
-dlsym_free
 rb_cDLSymbol
 rb_dlsym2csym
 rb_dlsym_call
@@ -67,4 +63,3 @@ rb_dlsym_new
 rb_dlsym_proto
 rb_dlsym_s_new
 rb_dlsym_to_ptr
-rb_s_dlsym_char2type