diff --git a/386/include/ape/math.h b/386/include/ape/math.h
index a9cd9dfa5..3bd3daade 100644
--- a/386/include/ape/math.h
+++ b/386/include/ape/math.h
@@ -73,4 +73,7 @@ extern double yn(int, double);
 }
 #endif
 
+#define isnan(x) isNaN(x)
+#define isinf(x) isInf(x, 0)
+
 #endif /* __MATH */