diff --git a/app.py b/app.py
index cde7c608..1226e1ae 100644
--- a/app.py
+++ b/app.py
@@ -84,7 +84,7 @@ def main():
         st.subheader("Your documents")
         pdf_docs = st.file_uploader(
             "Upload your PDFs here and click on 'Process'", accept_multiple_files=True)
-        if st.button("Process"):
+        if pdf_docs and st.button("Process"):
             with st.spinner("Processing"):
                 # get pdf text
                 raw_text = get_pdf_text(pdf_docs)