diff -up ode-0.9/include/ode/odemath.h~ ode-0.9/include/ode/odemath.h
--- ode-0.9/include/ode/odemath.h~	2007-10-12 22:08:55.000000000 +0200
+++ ode-0.9/include/ode/odemath.h	2007-10-12 22:08:55.000000000 +0200
@@ -294,14 +294,14 @@ ODE_API int  dSafeNormalize4 (dVector4 a
 static __inline void _dNormalize3(dVector3 a)
 {
 	int bNormalizationResult = dSafeNormalize3(a);
-	dIASSERT(bNormalizationResult);
+/*	dIASSERT(bNormalizationResult); */
 	dVARIABLEUSED(bNormalizationResult);
 }
 
 static __inline void _dNormalize4(dVector4 a)
 {
 	int bNormalizationResult = dSafeNormalize4(a);
-	dIASSERT(bNormalizationResult);
+/*	dIASSERT(bNormalizationResult); */
 	dVARIABLEUSED(bNormalizationResult);
 }