@@ -22,10 +22,12 @@
 
 #if defined HAVE_SEL_GET_NAME
 #define SEL_NAME(x) sel_get_name(x)
 #elif defined HAVE_SEL_GETNAME
 #define SEL_NAME(x) sel_getName(x)
+#else
+#error "You need either sel_get_name() or sel_getName!"
 #endif
 
 @implementation OFException
 + newWithObject: (id)obj
 {