diff --git a/src/borg/algorithms/blake2/ref/blake2-impl.h b/src/borg/algorithms/blake2/ref/blake2-impl.h
index ad9089eee..5dff7fc7a 100644
--- a/src/borg/algorithms/blake2/ref/blake2-impl.h
+++ b/src/borg/algorithms/blake2/ref/blake2-impl.h
@@ -1,14 +1,14 @@
 /*
    BLAKE2 reference source code package - reference C implementations
-  
+
    Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.  You may use this under the
    terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
    your option.  The terms of these licenses can be found at:
-  
+
    - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
    - OpenSSL license   : https://www.openssl.org/source/license.html
    - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
-  
+
    More information about the BLAKE2 hash function can be found at
    https://blake2.net.
 */
@@ -158,4 +158,3 @@ static BLAKE2_INLINE void secure_zero_memory(void *v, size_t n)
 }
 
 #endif
-
diff --git a/src/borg/algorithms/blake2/ref/blake2.h b/src/borg/algorithms/blake2/ref/blake2.h
index 6420c5367..ad62f260e 100644
--- a/src/borg/algorithms/blake2/ref/blake2.h
+++ b/src/borg/algorithms/blake2/ref/blake2.h
@@ -193,4 +193,3 @@ extern "C" {
 #endif
 
 #endif
-
diff --git a/src/borg/algorithms/blake2/ref/blake2b-ref.c b/src/borg/algorithms/blake2/ref/blake2b-ref.c
index 0d36fb0de..cd38b1ba0 100644
--- a/src/borg/algorithms/blake2/ref/blake2b-ref.c
+++ b/src/borg/algorithms/blake2/ref/blake2b-ref.c
@@ -1,14 +1,14 @@
 /*
    BLAKE2 reference source code package - reference C implementations
-  
+
    Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.  You may use this under the
    terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
    your option.  The terms of these licenses can be found at:
-  
+
    - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
    - OpenSSL license   : https://www.openssl.org/source/license.html
    - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
-  
+
    More information about the BLAKE2 hash function can be found at
    https://blake2.net.
 */
@@ -377,4 +377,3 @@ fail:
   return -1;
 }
 #endif
-