diff --git a/src/terminal.go b/src/terminal.go
index f22ec1ca..cb560b90 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -1093,6 +1093,9 @@ func (t *Terminal) extraLines() int {
 	if t.listBorderShape.Visible() {
 		extra += borderLines(t.listBorderShape)
 	}
+	if t.headerBorderShape.Visible() {
+		extra += borderLines(t.headerBorderShape)
+	}
 	if !t.noSeparatorLine() {
 		extra++
 	}
diff --git a/test/test_go.rb b/test/test_go.rb
index 8f52fd62..edefebd1 100755
--- a/test/test_go.rb
+++ b/test/test_go.rb
@@ -3702,6 +3702,22 @@ class TestGoFZF < TestBase
     BLOCK
     tmux.until { assert_block(block, _1) }
   end
+
+  def test_style_full_adaptive_height
+    tmux.send_keys %(seq 1| #{FZF} --style=full --height=~100% --header-lines=1 --info=default), :Enter
+    block = <<~BLOCK
+      ╭────────
+      ╰────────
+      ╭────────
+      │   1
+      ╰────────
+      ╭────────
+      │   0/0
+      │ >
+      ╰────────
+    BLOCK
+    tmux.until { assert_block(block, _1) }
+  end
 end
 
 module TestShell