--- a/curated_tokenizers/_spp.pxd
+++ b/curated_tokenizers/_spp.pxd
@@ -4,7 +4,7 @@ from libcpp.string cimport string
 from libcpp.vector cimport vector
 from libcpp cimport bool
 
-cdef extern from "builtin_pb/sentencepiece.pb.h" namespace "sentencepiece":
+cdef extern from "sentencepiece.pb.h" namespace "sentencepiece":
     cdef cppclass SentencePieceText_SentencePiece:
         string piece()
         int id()