diff --git a/tests/pwhash_test b/tests/pwhash_test
index ff89d60..525885e 100755
--- a/tests/pwhash_test
+++ b/tests/pwhash_test
@@ -77,6 +77,22 @@ if [ "x${pw#\$6\$}" = "x$pw" ]; then
     exit 1
 fi
 
+cp "${LIBUSER_CONF}_" "$LIBUSER_CONF"
+echo 'crypt_style = blowfish' >> "$LIBUSER_CONF"
+pw=$(workdir="$workdir" $VALGRIND $PYTHON "$srcdir"/pwhash.py)
+if [ "x${pw#\$2b\$}" = "x$pw" ]; then
+    echo "Invalid BLOWFISH hash" >&2
+    exit 1
+fi
+
+cp "${LIBUSER_CONF}_" "$LIBUSER_CONF"
+echo 'crypt_style = yescrypt' >> "$LIBUSER_CONF"
+pw=$(workdir="$workdir" $VALGRIND $PYTHON "$srcdir"/pwhash.py)
+if [ "x${pw#\$y\$}" = "x$pw" ]; then
+    echo "Invalid YESCRYPT hash" >&2
+    exit 1
+fi
+
 cp "${LIBUSER_CONF}_" "$LIBUSER_CONF"
 cat >> "$LIBUSER_CONF" <<\EOF
 crypt_style = sha256