diff --git a/Makefile b/Makefile
index 5580859afdb..ce2eabeca58 100644
--- a/Makefile
+++ b/Makefile
@@ -595,7 +595,6 @@ THIRD_PARTY_SOURCES =
 # interactive shell sessions without exporting it.
 unexport CDPATH
 
-SCRIPT_SH += git-bisect.sh
 SCRIPT_SH += git-difftool--helper.sh
 SCRIPT_SH += git-filter-branch.sh
 SCRIPT_SH += git-merge-octopus.sh
@@ -1064,7 +1063,7 @@ BUILTIN_OBJS += builtin/am.o
 BUILTIN_OBJS += builtin/annotate.o
 BUILTIN_OBJS += builtin/apply.o
 BUILTIN_OBJS += builtin/archive.o
-BUILTIN_OBJS += builtin/bisect--helper.o
+BUILTIN_OBJS += builtin/bisect.o
 BUILTIN_OBJS += builtin/blame.o
 BUILTIN_OBJS += builtin/branch.o
 BUILTIN_OBJS += builtin/bugreport.o
diff --git a/builtin.h b/builtin.h
index 8a58743ed63..b5567ea3a9d 100644
--- a/builtin.h
+++ b/builtin.h
@@ -116,7 +116,7 @@ int cmd_am(int argc, const char **argv, const char *prefix);
 int cmd_annotate(int argc, const char **argv, const char *prefix);
 int cmd_apply(int argc, const char **argv, const char *prefix);
 int cmd_archive(int argc, const char **argv, const char *prefix);
-int cmd_bisect__helper(int argc, const char **argv, const char *prefix);
+int cmd_bisect(int argc, const char **argv, const char *prefix);
 int cmd_blame(int argc, const char **argv, const char *prefix);
 int cmd_branch(int argc, const char **argv, const char *prefix);
 int cmd_bugreport(int argc, const char **argv, const char *prefix);
diff --git a/builtin/bisect--helper.c b/builtin/bisect.c
similarity index 99%
rename from builtin/bisect--helper.c
rename to builtin/bisect.c
index ef0b06d594b..1493d7d1d96 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect.c
@@ -20,7 +20,7 @@ static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
 static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT")
 static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN")
 
-static const char * const git_bisect_usage[] = {
+static const char * const builtin_bisect_usage[] = {
 	N_("git bisect help\n"
 	   "\tprint this long help message."),
 	N_("git bisect start [--term-{new,bad}=<term> --term-{old,good}=<term>]\n"
@@ -1182,7 +1182,7 @@ static int bisect_run(struct bisect_terms *terms, const char **argv, int argc)
 	}
 }
 
-int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
+int cmd_bisect(int argc, const char **argv, const char *prefix)
 {
 	int res = 0;
 	struct option options[] = {
@@ -1192,7 +1192,7 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 	const char *command = argc > 1 ? argv[1] : "help";
 
 	if (!strcmp("-h", command) || !strcmp("help", command))
-		usage_with_options(git_bisect_usage, options);
+		usage_with_options(builtin_bisect_usage, options);
 
 	argc -= 2;
 	argv += 2;
@@ -1239,7 +1239,7 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 		get_terms(&terms);
 		if (check_and_set_terms(&terms, command)) {
 			char *msg = xstrfmt(_("unknown command: '%s'"), command);
-			usage_msg_opt(msg, git_bisect_usage, options);
+			usage_msg_opt(msg, builtin_bisect_usage, options);
 		}
 		/* shift the `command` back in */
 		argc++;
diff --git a/git-bisect.sh b/git-bisect.sh
deleted file mode 100755
index 028d39cd9ce..00000000000
--- a/git-bisect.sh
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/bin/sh
-
-USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
-LONG_USAGE='git bisect help
-	print this long help message.
-git bisect start [--term-{new,bad}=<term> --term-{old,good}=<term>]
-		 [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<pathspec>...]
-	reset bisect state and start bisection.
-git bisect (bad|new) [<rev>]
-	mark <rev> a known-bad revision/
-		a revision after change in a given property.
-git bisect (good|old) [<rev>...]
-	mark <rev>... known-good revisions/
-		revisions before change in a given property.
-git bisect terms [--term-good | --term-bad]
-	show the terms used for old and new commits (default: bad, good)
-git bisect skip [(<rev>|<range>)...]
-	mark <rev>... untestable revisions.
-git bisect next
-	find next bisection to test and check it out.
-git bisect reset [<commit>]
-	finish bisection search and go back to commit.
-git bisect (visualize|view)
-	show bisect status in gitk.
-git bisect replay <logfile>
-	replay bisection log.
-git bisect log
-	show bisect log.
-git bisect run <cmd>...
-	use <cmd>... to automatically bisect.
-
-Please use "git help bisect" to get the full man page.'
-
-OPTIONS_SPEC=
-. git-sh-setup
-
-exec git bisect--helper "$@"
diff --git a/git.c b/git.c
index edda922ce6d..a8500132a28 100644
--- a/git.c
+++ b/git.c
@@ -490,7 +490,7 @@ static struct cmd_struct commands[] = {
 	{ "annotate", cmd_annotate, RUN_SETUP | NO_PARSEOPT },
 	{ "apply", cmd_apply, RUN_SETUP_GENTLY },
 	{ "archive", cmd_archive, RUN_SETUP_GENTLY },
-	{ "bisect--helper", cmd_bisect__helper, RUN_SETUP },
+	{ "bisect", cmd_bisect, RUN_SETUP },
 	{ "blame", cmd_blame, RUN_SETUP },
 	{ "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG },
 	{ "bugreport", cmd_bugreport, RUN_SETUP_GENTLY },
