diff --git a/hasher/hsh b/hasher/hsh
index 2bda509..c707fdc 100755
--- a/hasher/hsh
+++ b/hasher/hsh
@@ -50,6 +50,7 @@ Options:
   --no-cache                        do not use initroot cache;
   --no-contents-indices             do not use content indices;
   --no-repackage-source             do not repackage source along with binaries;
+  --check-program=CHECK_PROGRAM     run specific program as sisyphus_check;
   --no-sisyphus-check-in[=LIST]     do not run sisyphus_check input tests
                                     [specified in comma-separated LIST];
   --no-sisyphus-check[=LIST]        do not run sisyphus_check tests
@@ -97,6 +98,7 @@ eval set -- "$TEMP"
 
 cleanup_only=
 initroot_only=
+check_program=
 while :; do
 	case "$1" in
 		--apt-config)
@@ -135,6 +137,9 @@ while :; do
 			;;
 		--no-repackage-source|--repackage-source) repackage_source="$1"
 			;;
+		--check-program) shift
+			[ -x "$1" ] && check_program="$1"
+			;;
 		--no-sisyphus-check) shift
 			[ -n "$1" ] && no_sisyphus_check="$1" || no_sisyphus_check=all
 			;;
@@ -370,6 +375,7 @@ handle_package()
 		${no_stuff:+--no-stuff} \
 		${exclude_docs:+--excludedocs} \
 		${save_fakeroot:+--save-fakeroot} \
+		${check_program:+--check-program="$check_program"} \
 		${no_sisyphus_check:+--no-sisyphus-check="$no_sisyphus_check"} \
 		${no_sisyphus_check_in:+--no-sisyphus-check-in="$no_sisyphus_check_in"} \
 		${no_sisyphus_check_out:+--no-sisyphus-check-out="$no_sisyphus_check_out"} \
diff --git a/hasher/hsh-rebuild b/hasher/hsh-rebuild
index c59940f..6ad8a64 100755
--- a/hasher/hsh-rebuild
+++ b/hasher/hsh-rebuild
@@ -38,6 +38,7 @@ Options:
   --install-only                    do not build, stop after installing build dependencies;
   --mountpoints=LIST                comma-separated list of known mount points;
   --nodeps                          ignore package dependencies (dangerous);
+  --check-program=CHECK_PROGRAM     run specific program as sisyphus_check;
   --no-sisyphus-check-in[=LIST]     do not run sisyphus_check input tests [specified in LIST];
   --no-sisyphus-check[=LIST]        do not run sisyphus_check tests [specified in LIST];
   --no-sisyphus-check-out[=LIST]    do not run sisyphus_check output tests [specified in LIST];
@@ -74,6 +75,7 @@ eval set -- "$TEMP"
 nodeps=
 install_only=
 source_only=
+check_program=
 while :; do
 	case "$1" in
 		--args) shift; rpmargs="$1"
@@ -92,6 +94,9 @@ while :; do
 			;;
 		--no-lock) no_lock=1
 			;;
+		--check-program) shift
+			[ -x "$1" ] && check_program="$1"
+			;;
 		--no-sisyphus-check) shift
 			[ -n "$1" ] && no_sisyphus_check="$1" || no_sisyphus_check=all
 			;;
@@ -149,6 +154,10 @@ if [ -n "$prog_query_req" -a -n "$query_repackage" ]; then
 	show_usage '--query-req-prog and --query-repackage are mutually exclusive options.'
 fi
 
+if [ -z "$check_program" ]; then
+	check_program=${SISYPHUS_CHECK-sisyphus_check}
+fi
+
 if [ -z "$workdir" ]; then
 	# Exactly two arguments.
 	[ "$#" -ge 2 ] || show_usage 'Insufficient arguments.'
diff --git a/hasher/hsh-sh-rebuild-functions b/hasher/hsh-sh-rebuild-functions
index a317fe8..c357836 100644
--- a/hasher/hsh-sh-rebuild-functions
+++ b/hasher/hsh-sh-rebuild-functions
@@ -197,7 +197,7 @@ run_sisyphus_check()
 
 	create_entry_header
 	cat >>"$entry" <<__EOF__
-sisyphus_check --no-check="$(quote_shell "$no_check")" "$dir"
+$check_program --no-check="$(quote_shell "$no_check")" "$dir"
 __EOF__
 
 	wlimit_time_elapsed=$wlimit_time_long wlimit_time_idle=$wlimit_time_long wlimit_bytes_written=$wlimit_bytes_out \