diff --git a/arc/arc.spec b/arc/arc.spec
index f330fdb42e..00e446f35f 100644
--- a/arc/arc.spec
+++ b/arc/arc.spec
@@ -38,7 +38,7 @@ Class:        PLUS
 Group:        Archiver
 License:      GPL
 Version:      %{V_arc}
-Release:      20041107
+Release:      20050217
 
 #   list of sources
 Source0:      http://osdn.dl.sourceforge.net/arc/arc-%{V_arc}.tar.gz
@@ -79,9 +79,10 @@ AutoReqProv:  no
     ( cd arc-%{V_arc}
       mflags=""
       case "%{l_platform -t}" in
-          *-*bsd*   ) mflags="SYSTEM='-DBSD=1'" ;;
-          *-*linux* ) mflags="SYSTEM='-DSYSV=1'" ;;
-          *-*sunos* ) mflags="SYSTEM='-DSYSV=1 -DNEED_ALPHASORT' LIBS='-L/usr/ucblib -lucb'" ;;
+          *-*bsd*          ) mflags="SYSTEM='-DBSD=1'" ;;
+          *-*linux*        ) mflags="SYSTEM='-DSYSV=1'" ;;
+          *-*sunos5.[6-9]* ) mflags="SYSTEM='-DSYSV=1 -DNEED_ALPHASORT' LIBS='-L/usr/ucblib -lucb'" ;;
+          *-*sunos*        ) mflags="SYSTEM='-DSYSV=1'" ;;
       esac
       eval %{l_make} %{l_mflags -O} \
           CC=\"%{l_cc} %{l_cflags -O}\" \