diff --git a/desmume/src/utils/decrypt/crc.cpp b/desmume/src/utils/decrypt/crc.cpp
index 52f3fd37b..d3f375fea 100644
--- a/desmume/src/utils/decrypt/crc.cpp
+++ b/desmume/src/utils/decrypt/crc.cpp
@@ -1,5 +1,5 @@
 //taken from ndstool
-//http://devkitpro.svn.sourceforge.net/viewvc/devkitpro/trunk/tools/nds/ndstool/source/crc.cpp?revision=1587
+//https://github.com/devkitPro/ndstool/blob/master/source/crc.cpp
 
 /* crc.cpp - this file is part of DeSmuME
  *
diff --git a/desmume/src/utils/decrypt/crc.h b/desmume/src/utils/decrypt/crc.h
index 2601e0e80..bba05b8be 100644
--- a/desmume/src/utils/decrypt/crc.h
+++ b/desmume/src/utils/decrypt/crc.h
@@ -1,5 +1,5 @@
 //taken from ndstool
-//http://devkitpro.svn.sourceforge.net/viewvc/devkitpro/trunk/tools/nds/ndstool/include/crc.h?revision=2447
+//https://github.com/devkitPro/ndstool/blob/master/source/crc.h
 
 /* crc.h - this file is part of DeSmuME
  *
diff --git a/desmume/src/utils/decrypt/decrypt.cpp b/desmume/src/utils/decrypt/decrypt.cpp
index d8280efad..982fb0ba0 100644
--- a/desmume/src/utils/decrypt/decrypt.cpp
+++ b/desmume/src/utils/decrypt/decrypt.cpp
@@ -1,5 +1,5 @@
 //taken from ndstool and modified trivially
-//http://devkitpro.svn.sourceforge.net/viewvc/devkitpro/trunk/tools/nds/ndstool/source/encryption.cpp?revision=1565
+//https://github.com/devkitPro/ndstool/blob/master/source/encryption.cpp
 
 /* decrypt.cpp - this file is part of DeSmuME
  *
@@ -561,4 +561,4 @@ bool CheckValidRom(u8 *header, u8 *secure)
 	int romType = DetectRomType(*hdr, (char*)secure);
 
 	return (romType != ROMTYPE_INVALID);
-}
\ No newline at end of file
+}
diff --git a/desmume/src/utils/decrypt/header.h b/desmume/src/utils/decrypt/header.h
index b5db5c28a..cff372b88 100644
--- a/desmume/src/utils/decrypt/header.h
+++ b/desmume/src/utils/decrypt/header.h
@@ -1,5 +1,5 @@
 //taken from ndstool
-//http://devkitpro.svn.sourceforge.net/viewvc/devkitpro/trunk/tools/nds/ndstool/include/header.h?revision=2447
+//https://github.com/devkitPro/ndstool/blob/master/source/header.h
 
 /* header.h - this file is part of DeSmuME
  *