diff --git a/src/borg/algorithms/blake2-libselect.h b/src/borg/algorithms/blake2-libselect.h
index 5486400eb..3dbfcd527 100644
--- a/src/borg/algorithms/blake2-libselect.h
+++ b/src/borg/algorithms/blake2-libselect.h
@@ -1,5 +1,5 @@
 #ifdef BORG_USE_LIBB2
 #include <blake2.h>
 #else
-#include "blake2/blake2b-ref.c"
+#include "blake2/ref/blake2b-ref.c"
 #endif
diff --git a/src/borg/algorithms/blake2/blake2-impl.h b/src/borg/algorithms/blake2/ref/blake2-impl.h
similarity index 100%
rename from src/borg/algorithms/blake2/blake2-impl.h
rename to src/borg/algorithms/blake2/ref/blake2-impl.h
diff --git a/src/borg/algorithms/blake2/blake2.h b/src/borg/algorithms/blake2/ref/blake2.h
similarity index 100%
rename from src/borg/algorithms/blake2/blake2.h
rename to src/borg/algorithms/blake2/ref/blake2.h
diff --git a/src/borg/algorithms/blake2/blake2b-ref.c b/src/borg/algorithms/blake2/ref/blake2b-ref.c
similarity index 100%
rename from src/borg/algorithms/blake2/blake2b-ref.c
rename to src/borg/algorithms/blake2/ref/blake2b-ref.c