diff --git a/source/collada/Decompose.cpp b/source/collada/Decompose.cpp
index b318fd34df..a982cb2617 100644
--- a/source/collada/Decompose.cpp
+++ b/source/collada/Decompose.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2013 Wildfire Games.
+/* Copyright (C) 2015 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -124,7 +124,7 @@ Quat Qt_FromMatrix(HMatrix mat)
      * Otherwise, the largest diagonal entry corresponds to the largest of |x|,
      * |y|, or |z|, one of which must be larger than |w|, and at least 1/2. */
     Quat qu;
-    register double tr, s;
+    double tr, s;
 
     tr = mat[X][X] + mat[Y][Y]+ mat[Z][Z];
     if (tr >= 0.0) {
diff --git a/source/third_party/mongoose/mongoose.cpp b/source/third_party/mongoose/mongoose.cpp
index 0e0f2ee743..203cc18e8c 100644
--- a/source/third_party/mongoose/mongoose.cpp
+++ b/source/third_party/mongoose/mongoose.cpp
@@ -11,6 +11,7 @@
 //    in the build system.
 //  * To avoid debug spew, we disable DEBUG.
 //  * Use memcopy to get rid of strict-aliasing warning
+//  * Remove use of deprecated 'register' storage class
 
 #define __STDC_LIMIT_MACROS
 
@@ -1855,7 +1856,7 @@ static void MD5Init(MD5_CTX *ctx) {
 }
 
 static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) {
-  register uint32_t a, b, c, d;
+  uint32_t a, b, c, d;
 
   a = buf[0];
   b = buf[1];