diff --git a/src/sage/graphs/bliss.pyx b/src/sage/graphs/bliss.pyx
index b9880972b92..373b99f4d5e 100644
--- a/src/sage/graphs/bliss.pyx
+++ b/src/sage/graphs/bliss.pyx
@@ -59,7 +59,7 @@ cdef extern from "bliss/digraph.hh" namespace "bliss":
         const unsigned int* canonical_form(Stats&)
         unsigned int get_hash()
 
-cdef extern from "bliss_find_automorphisms.h":
+cdef extern from "bliss_cpp/bliss_find_automorphisms.h":
 
     void bliss_find_automorphisms(Graph*, void (*)(void*, unsigned int, const unsigned int*), void*, Stats&)
     void bliss_find_automorphisms(Digraph*, void (*)(void*, unsigned int, const unsigned int*), void*, Stats&)
diff --git a/src/sage/graphs/bliss_find_automorphisms.h b/src/sage/graphs/bliss_cpp/bliss_find_automorphisms.h
similarity index 100%
rename from src/sage/graphs/bliss_find_automorphisms.h
rename to src/sage/graphs/bliss_cpp/bliss_find_automorphisms.h