--- extremetuxracer-0.4.orig/src/etracer.h
+++ extremetuxracer-0.4/src/etracer.h
@@ -142,7 +142,7 @@
 #elif defined( HAVE__ISNAN )
 #   define FINITE(x) (!_isnan(x))
 #else
-#   error "You don't have finite(), _finite(), isnan(), or _isnan() on your system!"
+#   define FINITE(x) (isfinite(x))
 #endif