diff --git a/man/hstr.1 b/man/hstr.1
index 9aee3db7..aed57b84 100644
--- a/man/hstr.1
+++ b/man/hstr.1
@@ -199,7 +199,7 @@ export HISTSIZE=${HISTFILESIZE}  # increase history size (default is 500)
 # ensure synchronization between bash memory and history file
 export PROMPT_COMMAND="history -a; history -n; ${PROMPT_COMMAND}"
 function hstrnotiocsti {
-    { HSTR_OUT="$( { </dev/tty hstr ${READLINE_LINE}; } 2>&1 1>&3 3>&- )"; } 3>&1;
+    { HSTR_OUT="$( { </dev/tty hstr -- ${READLINE_LINE}; } 2>&1 1>&3 3>&- )"; } 3>&1;
     READLINE_LINE="$(hstr ${READLINE_LINE})"
     READLINE_POINT=${#READLINE_LINE}
 }
diff --git a/src/hstr.c b/src/hstr.c
index 8183031b..fd162a61 100644
--- a/src/hstr.c
+++ b/src/hstr.c
@@ -364,7 +364,7 @@ void print_bash_install_code(void)
 #else
         "\nfunction hstrnotiocsti {"
 #endif
-        "\n    { READLINE_LINE=\"$( { </dev/tty hstr ${READLINE_LINE}; } 2>&1 1>&3 3>&- )\"; } 3>&1;"
+        "\n    { READLINE_LINE=\"$( { </dev/tty hstr -- ${READLINE_LINE}; } 2>&1 1>&3 3>&- )\"; } 3>&1;"
         "\n    READLINE_POINT=${#READLINE_LINE}"
         "\n}"
         "\n# if this is interactive shell, then bind hstr to Ctrl-r (for Vi mode check doc)"
diff --git a/test/sh/tiotcsi-function-bash.sh b/test/sh/tiotcsi-function-bash.sh
index 863967dd..18c492f1 100755
--- a/test/sh/tiotcsi-function-bash.sh
+++ b/test/sh/tiotcsi-function-bash.sh
@@ -188,7 +188,7 @@ export HISTSIZE=${HISTFILESIZE}  # increase history size (default is 500)
 export PROMPT_COMMAND="history -a; history -n; ${PROMPT_COMMAND}"
 # if this is interactive shell, then bind hstr to Ctrl-r (for Vi mode check doc)
 function hstrnotiocsti {
-    { HSTR_OUT="$( { </dev/tty hstr ${READLINE_LINE}; } 2>&1 1>&3 3>&- )"; } 3>&1;
+    { HSTR_OUT="$( { </dev/tty hstr -- ${READLINE_LINE}; } 2>&1 1>&3 3>&- )"; } 3>&1;
     READLINE_LINE="${HSTR_OUT}"
     READLINE_POINT=${#READLINE_LINE}
 }