diff --git a/shell/alias/newsboat.sh b/shell/alias/newsboat.sh
index 971ad9d..c877906 100644
--- a/shell/alias/newsboat.sh
+++ b/shell/alias/newsboat.sh
@@ -1,3 +1,4 @@
-alias nb="\
-newsboat \
-"
+nb() {
+	newsboat \
+		"${@}"
+}
diff --git a/shell/alias/shell.sh b/shell/alias/shell.sh
index d6aa697..d38c3cb 100644
--- a/shell/alias/shell.sh
+++ b/shell/alias/shell.sh
@@ -6,7 +6,9 @@ a() {
 
 # swap directory (current ↔ previous)
 sd() {
-	cd - || return
+	cd \
+		- ||
+		return
 }
 
 # exit terminal