diff --git a/src/lib/bookman-fonts.ts b/src/lib/bookman-fonts.ts
index b91bc43..9f35587 100644
--- a/src/lib/bookman-fonts.ts
+++ b/src/lib/bookman-fonts.ts
@@ -6810,16 +6810,14 @@ const bolditalic_b64 =
   "LUEtQRu6BAAEAAALK1mwDiNCsA8jQrASQ1i5GH47IRu6AagEAAALK1mwECNCsBEjQgEBKysrKysrKysrKysrKytzc3N0dHRzc3Nz" +
   "c3Nzc3Nzc3Nzc15zXnN0dQErK3NzdHVzdHUAKysrKysrAEuwHlBYsANFaLgDakVosECLYLAgI0RZsAdFaLgDa0VosECLYLAiI0QA";
 
-let registered = false;
 export function registerBookmanFont(pdf: jsPDF) {
-  // Add to VFS once; jsPDF instances share the global file system.
-  if (!registered) {
-    pdf.addFileToVFS("BookmanOldStyle-Regular.ttf", regular_b64);
-    pdf.addFileToVFS("BookmanOldStyle-Italic.ttf", italic_b64);
-    pdf.addFileToVFS("BookmanOldStyle-Bold.ttf", bold_b64);
-    pdf.addFileToVFS("BookmanOldStyle-BoldItalic.ttf", bolditalic_b64);
-    registered = true;
-  }
+  // jsPDF's VFS is per-instance — must add files for every new pdf object
+  // before calling addFont, otherwise addFont throws
+  // "Font is not stored as string-data in vFS".
+  pdf.addFileToVFS("BookmanOldStyle-Regular.ttf", regular_b64);
+  pdf.addFileToVFS("BookmanOldStyle-Italic.ttf", italic_b64);
+  pdf.addFileToVFS("BookmanOldStyle-Bold.ttf", bold_b64);
+  pdf.addFileToVFS("BookmanOldStyle-BoldItalic.ttf", bolditalic_b64);
   pdf.addFont("BookmanOldStyle-Regular.ttf", BOOKMAN_FAMILY, "normal");
   pdf.addFont("BookmanOldStyle-Italic.ttf", BOOKMAN_FAMILY, "italic");
   pdf.addFont("BookmanOldStyle-Bold.ttf", BOOKMAN_FAMILY, "bold");