diff --git a/basis/db/postgresql/ffi/ffi.factor b/basis/db/postgresql/ffi/ffi.factor
index f4a55e3280..69ac2c5e5e 100644
--- a/basis/db/postgresql/ffi/ffi.factor
+++ b/basis/db/postgresql/ffi/ffi.factor
@@ -63,7 +63,6 @@ C-TYPE: PGconn
 C-TYPE: PGresult
 C-TYPE: PGcancel
 TYPEDEF: uint Oid
-TYPEDEF: uint* Oid*
 TYPEDEF: char pqbool
 C-TYPE: PQconninfoOption
 C-TYPE: PGnotify
diff --git a/basis/windows/usp10/usp10.factor b/basis/windows/usp10/usp10.factor
index 57702d8780..1c33aaf940 100644
--- a/basis/windows/usp10/usp10.factor
+++ b/basis/windows/usp10/usp10.factor
@@ -57,7 +57,7 @@ SCRIPT_JUSTIFFY_RESERVED4 ;
 STRUCT: SCRIPT_VISATTR
     { flags WORD } ;
 
-TYPEDEF: void* SCRIPT_CACHE*
+C-TYPE: SCRIPT_CACHE
 C-TYPE: ABC
 
 FUNCTION: HRESULT ScriptShape (
diff --git a/basis/windows/winsock/winsock.factor b/basis/windows/winsock/winsock.factor
index b8d1f099d2..818737ca5a 100644
--- a/basis/windows/winsock/winsock.factor
+++ b/basis/windows/winsock/winsock.factor
@@ -141,7 +141,7 @@ STRUCT: timeval
     { sec long }
     { usec long } ;
 
-TYPEDEF: void* fd_set*
+C-TYPE: fd_set
 
 LIBRARY: winsock