diff --git a/bin/sh/main.c b/bin/sh/main.c
index 8df24dba312e..cbe026e13640 100644
--- a/bin/sh/main.c
+++ b/bin/sh/main.c
@@ -134,6 +134,7 @@ main(int argc, char *argv[])
 	setstackmark(&smark);
 	setstackmark(&smark2);
 	procargs(argc, argv);
+	trap_init();
 	pwd_init(iflag);
 	INTON;
 	if (iflag)
diff --git a/bin/sh/tests/execution/Makefile b/bin/sh/tests/execution/Makefile
index c457c148b8f3..cfc21caf3791 100644
--- a/bin/sh/tests/execution/Makefile
+++ b/bin/sh/tests/execution/Makefile
@@ -19,6 +19,7 @@ ${PACKAGE}FILES+=		bg9.0
 ${PACKAGE}FILES+=		bg10.0 bg10.0.stdout
 ${PACKAGE}FILES+=		bg11.0
 ${PACKAGE}FILES+=		bg12.0
+${PACKAGE}FILES+=		bg13.0
 ${PACKAGE}FILES+=		env1.0
 ${PACKAGE}FILES+=		fork1.0
 ${PACKAGE}FILES+=		fork2.0
diff --git a/bin/sh/tests/execution/bg13.0 b/bin/sh/tests/execution/bg13.0
new file mode 100644
index 000000000000..37a4ad864ded
--- /dev/null
+++ b/bin/sh/tests/execution/bg13.0
@@ -0,0 +1,16 @@
+# $FreeBSD$
+
+T=`mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXXXX`
+trap 'rm -rf $T' 0
+cd $T || exit 3
+mkfifo fifo1
+# Use a trap, not the default action, since the shell may catch SIGINT and
+# therefore its processing may be delayed.
+{ set -C; trap 'exit 5' TERM; read dummy <fifo1; exit 4; } &
+exec 3>fifo1
+kill -INT "$!"
+kill -TERM "$!"
+exec 3>&-
+wait "$!"
+r=$?
+[ "$r" = 5 ]
diff --git a/bin/sh/trap.c b/bin/sh/trap.c
index 1b9ab63f47cb..d7a98604c22c 100644
--- a/bin/sh/trap.c
+++ b/bin/sh/trap.c
@@ -474,14 +474,20 @@ dotrap(void)
 }
 
 
+void
+trap_init(void)
+{
+	setsignal(SIGINT);
+	setsignal(SIGQUIT);
+}
+
+
 /*
  * Controls whether the shell is interactive or not based on iflag.
  */
 void
 setinteractive(void)
 {
-	setsignal(SIGINT);
-	setsignal(SIGQUIT);
 	setsignal(SIGTERM);
 }
 
diff --git a/bin/sh/trap.h b/bin/sh/trap.h
index 63d0bd5e70b1..fdc4b7a9683a 100644
--- a/bin/sh/trap.h
+++ b/bin/sh/trap.h
@@ -45,6 +45,7 @@ void ignoresig(int);
 int issigchldtrapped(void);
 void onsig(int);
 void dotrap(void);
+void trap_init(void);
 void setinteractive(void);
 void exitshell(int) __dead2;
 void exitshell_savedstatus(void) __dead2;