diff --git a/plugins/pck-update.in b/plugins/pck-update.in
index b99ef10..ee3f4d2 100644
--- a/plugins/pck-update.in
+++ b/plugins/pck-update.in
@@ -34,6 +34,7 @@ me=(${0##*/} "@version@" "@date@")
 # output verbosity
 let "verbose = 1"
 #
+let "noprep = 0"
 let "cleanup = 0"
 let "spec_format = 0"
 let "rebuild = 0"
@@ -97,7 +98,7 @@ function usage() {
              [--packager-email \"email@domain\" ] [--nosrpm|--norpm] \\
              [--force-update] [--force-build] [--force-install] \\
              [--force-download] [--ignore-test t1[,t2,...]] \\
-             [-c] [-f] [-L] [-R] [-C <conf_file>]
+             [-p] [-c] [-f] [-L] [-R] [-C <conf_file>]
 
 "$"where the above options mean"":
  -u, --update       "$"Update the package <pck> to version <ver> and release <rel>""
@@ -147,6 +148,7 @@ function usage() {
      --list-check   "$"action"" 5: "$"Do a \`list check'""
  -b, --update-autobuildreq""
                     "$"action"" 6: "$"Replace the block AUTOBUILDREQ""
+ -p, --noprep       "$"Skip rpmbuild %prep macro when retrying building from an existing builddir""
  -c, --clear        "$"Remove all the temporary files except (s)rpm packages""
  -f, --format       "$"Enable specfile autoformatting""
  -L, --log          "$"Unable logging to file (logging dir: \`\$logging_dir')""
@@ -196,14 +198,14 @@ for arg in $@; do
 done
 
 exec_options=`LC_ALL=C getopt \
-   -o ua:d:l:S:A:bcfLRC:DqhV \
+   -o ua:d:l:S:A:pbcfLRC:DqhV \
    --long \
 update,action:,define:,login:,specfile:,arch:,\
 server-download:,server-upload:,server:,\
 changelog:,packager-fullname:,packager-email:,distro-rpm:,\
 nosrpm,norpm,list-check,update-autobuildreq,\
 force-update,force-build,force-install,force-download,force,\
-ignore-test:,clear,format,log,rebuild,root:,\
+ignore-test:,noprep,clear,format,log,rebuild,root:,\
 frontend_opts:,colors:,config:,\
 debug,quiet,help,version \
    -n "$me" -- "$@"`
@@ -281,6 +283,8 @@ while :; do
          let "force_upload = 1" ;;
       --ignore-test)
          ignore_test_list=$2; shift ;;
+      -p|--noprep)
+         noprep=1 ;;
       -c|--clear)
          cleanup=1 ;;
       -f|--format)
@@ -2122,6 +2126,8 @@ ${proxy:+--proxy $proxy} ${proxy_user:+--proxy-user $proxy_user} \
          [ "$BUILD_ARCH" != "$target_cpu" ] &&
             USER_RPMDEFINE_OPTS="--target $target_cpu $USER_RPMDEFINE_OPTS"
 
+         [ "$noprep" = "1" ] && rpmbuild_opts="$rpmbuild_opts --noprep"
+
          [ "$cleanup" = "1" ] && rpmbuild_opts="$rpmbuild_opts --clean"
 
          # note: exit with error when build requirements are missing