diff --git a/src/components/forms/custom-form-builder.tsx b/src/components/forms/custom-form-builder.tsx
index 815fc66..d9aec3c 100644
--- a/src/components/forms/custom-form-builder.tsx
+++ b/src/components/forms/custom-form-builder.tsx
@@ -227,6 +227,7 @@ export function CustomFormBuilder() {
   const [customDefs, setCustomDefs] = useState<CustomFieldVar[]>([]);
   const [fontFamily, setFontFamily] = useState("Bookman Old Style");
   const [fontSize, setFontSize] = useState(12);
+  const [lineHeight, setLineHeight] = useState(1.5);
 
   // Template management
   const [templates, setTemplates] = useState<SavedTemplate[]>([]);
@@ -288,14 +289,14 @@ export function CustomFormBuilder() {
     setTemplates((data ?? []) as unknown as SavedTemplate[]);
   };
 
-  // Apply font style to editor DOM
+  // Apply font style + line height to editor DOM
   useEffect(() => {
     if (!editor) return;
     const el = editor.view.dom as HTMLElement;
     el.style.fontFamily = `"${fontFamily}", Georgia, serif`;
     el.style.fontSize = `${fontSize}pt`;
-    el.style.lineHeight = "1.5";
-  }, [editor, fontFamily, fontSize]);
+    el.style.lineHeight = String(lineHeight);
+  }, [editor, fontFamily, fontSize, lineHeight]);
 
   const insertVar = (key: string) => {
     if (!editor) return;