@@ -169,14 +169,14 @@
 ], [
 	Foo *foo = (id)0;
 	[foo setBar: (id)0];
 	foo = [foo bar];
 ], [
-	AC_SUBST(PROPERTIESTESTS_M, "PropertiesTests.m")
 	AC_MSG_RESULT(yes)
 ], [
 	AC_MSG_RESULT(no)
+	AC_MSG_ERROR(Compiler does not support properties!)
 ])
 
 AC_MSG_CHECKING(whether Objective C compiler supports blocks)
 old_OBJCFLAGS="$OBJCFLAGS"
 OBJCFLAGS="$OBJCFLAGS -fblocks"