diff --git a/pages/common/qpdf.md b/pages/common/qpdf.md
index 2f89e73a2..62d7b405e 100644
--- a/pages/common/qpdf.md
+++ b/pages/common/qpdf.md
@@ -7,7 +7,11 @@
 
 `qpdf --empty --pages {{input.pdf}} {{1-3,5,6-10}} -- {{output.pdf}}`
 
-- Merge (concatenate) a list of PDF files and save the result as another one:
+- Merge (concatenate) all the pages of a list of PDF files and save the result as a new PDF:
+
+`qpdf --empty --pages {{file1.pdf}} {{file2.pdf}} {{file3.pdf}} -- {{output.pdf}}`
+
+- Merge (concatenate) given pages from a list of PDF files and save the result as a new PDF:
 
 `qpdf --empty --pages {{file1.pdf}} {{1,6-8}} --pages {{file2.pdf}} {{3,4,5}} -- {{output.pdf}}`