diff --git a/source/collada/Decompose.cpp b/source/collada/Decompose.cpp
index 5f097210ab..b318fd34df 100644
--- a/source/collada/Decompose.cpp
+++ b/source/collada/Decompose.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009 Wildfire Games.
+/* Copyright (C) 2013 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -413,7 +413,7 @@ Quat snuggle(Quat q, HVect *k)
 	mag[0] = (double)q.z*q.z+(double)q.w*q.w-0.5;
 	mag[1] = (double)q.x*q.z-(double)q.y*q.w;
 	mag[2] = (double)q.y*q.z+(double)q.x*q.w;
-	for (i=0; i<3; i++) if ((neg[i] = (mag[i]<0.0))) mag[i] = -mag[i];
+	for (i=0; i<3; i++) if ((neg[i] = (mag[i]<0.0)) != 0) mag[i] = -mag[i];
 	if (mag[0]>mag[1]) {if (mag[0]>mag[2]) win = 0; else win = 2;}
 	else		   {if (mag[1]>mag[2]) win = 1; else win = 2;}
 	switch (win) {
@@ -432,7 +432,7 @@ Quat snuggle(Quat q, HVect *k)
 	qa[0] = q.x; qa[1] = q.y; qa[2] = q.z; qa[3] = q.w;
 	for (i=0; i<4; i++) {
 	    pa[i] = 0.0;
-	    if ((neg[i] = (qa[i]<0.0))) qa[i] = -qa[i];
+	    if ((neg[i] = (qa[i]<0.0)) != 0) qa[i] = -qa[i];
 	    par ^= neg[i];
 	}
 	/* Find two largest components, indices in hi and lo */