diff --git a/src/liblzma/check/crc32_fast.c b/src/liblzma/check/crc32_fast.c
index 73659049..9fce94d3 100644
--- a/src/liblzma/check/crc32_fast.c
+++ b/src/liblzma/check/crc32_fast.c
@@ -15,6 +15,7 @@
 #include "check.h"
 #include "crc_common.h"
 
+
 #ifdef CRC_GENERIC
 
 ///////////////////
@@ -80,6 +81,7 @@ crc32_generic(const uint8_t *buf, size_t size, uint32_t crc)
 }
 #endif
 
+
 #if defined(CRC_GENERIC) && defined(CRC_CLMUL)
 
 //////////////////////////
diff --git a/src/liblzma/check/crc64_fast.c b/src/liblzma/check/crc64_fast.c
index 4e6633db..ce74901c 100644
--- a/src/liblzma/check/crc64_fast.c
+++ b/src/liblzma/check/crc64_fast.c
@@ -14,6 +14,7 @@
 #include "check.h"
 #include "crc_common.h"
 
+
 #ifdef CRC_GENERIC
 
 /////////////////////////////////
@@ -75,7 +76,9 @@ crc64_generic(const uint8_t *buf, size_t size, uint64_t crc)
 }
 #endif
 
+
 #if defined(CRC_GENERIC) && defined(CRC_CLMUL)
+
 //////////////////////////
 // Function dispatching //
 //////////////////////////
diff --git a/src/liblzma/check/crc_clmul.c b/src/liblzma/check/crc_clmul.c
index 0c2bdab1..8db82940 100644
--- a/src/liblzma/check/crc_clmul.c
+++ b/src/liblzma/check/crc_clmul.c
@@ -22,7 +22,6 @@
 //              Lasse Collin
 //              Jia Tan
 //
-//
 //  This file has been put into the public domain.
 //  You can do whatever you want with this file.
 //