diff --git a/finance/sc-im/Portfile b/finance/sc-im/Portfile
index 5367f6c863a46..d3b4320fb106e 100644
--- a/finance/sc-im/Portfile
+++ b/finance/sc-im/Portfile
@@ -1,6 +1,7 @@
 # -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
 
 PortSystem          1.0
+PortGroup           compiler_blacklist_versions 1.0
 PortGroup           github 1.0
 PortGroup           makefile 1.0
 
@@ -30,7 +31,7 @@ destroot.destdir-append \
 build.env-append    CFLAGS=-DGNUPLOT
 
 compiler.blacklist-append \
-                    *gcc-4.0 *gcc-4.2
+                    *gcc-4.0 *gcc-4.2 {clang}
 
 depends_build-append \
                     bin:bison:bison \