diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d2f8859..a20bede7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ CHANGELOG
   printf "\e[38;5;208mOption 1\e[m\nOption 2" | fzf --ansi
   printf "\e[38:5:208mOption 1\e[m\nOption 2" | fzf --ansi
   ```
+- Support `border-{up,down}` as the synonyms for `border-{top,bottom}` in
+  `--preview-window`
 
 0.32.1
 ------
diff --git a/man/man1/fzf.1 b/man/man1/fzf.1
index 0077561d..bc066de8 100644
--- a/man/man1/fzf.1
+++ b/man/man1/fzf.1
@@ -189,21 +189,21 @@ Choose the layout (default: default)
 A synonym for \fB--layout=reverse\fB
 
 .TP
-.BI "--border" [=STYLE]
+.BI "--border" [=BORDER_OPT]
 Draw border around the finder
 
 .br
-.BR rounded "     Border with rounded corners (default)"
+.BR rounded "       Border with rounded corners (default)"
 .br
-.BR sharp "       Border with sharp corners"
+.BR sharp "         Border with sharp corners"
 .br
-.BR horizontal "  Horizontal lines above and below the finder"
+.BR horizontal "    Horizontal lines above and below the finder"
 .br
-.BR vertical "    Vertical lines on each side of the finder"
+.BR vertical "      Vertical lines on each side of the finder"
 .br
-.BR top
+.BR top " (up)"
 .br
-.BR bottom
+.BR bottom " (down)"
 .br
 .BR left
 .br
diff --git a/src/options.go b/src/options.go
index 6882eee0..707efb2d 100644
--- a/src/options.go
+++ b/src/options.go
@@ -1228,9 +1228,9 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 			opts.border = tui.BorderHorizontal
 		case "border-vertical":
 			opts.border = tui.BorderVertical
-		case "border-top":
+		case "border-up", "border-top":
 			opts.border = tui.BorderTop
-		case "border-bottom":
+		case "border-down", "border-bottom":
 			opts.border = tui.BorderBottom
 		case "border-left":
 			opts.border = tui.BorderLeft