diff --git a/.github/workflows/pdf-build.yml b/.github/workflows/pdf-build.yml
index 03a9091..6931b85 100644
--- a/.github/workflows/pdf-build.yml
+++ b/.github/workflows/pdf-build.yml
@@ -32,7 +32,7 @@ jobs:
           npm install --save-dev @marp-team/marp-cli
       - name: Build PDFs
         run: |
-          for input in *.pdf */*.pdf; do
+          for input in *.pdf; do
             zip -g PDF.zip "${input}"
           done
           for input in *.md */*.md; do