diff --git a/pdf/README.md b/pdf/README.md
index d019ac8..ff850ac 100644
--- a/pdf/README.md
+++ b/pdf/README.md
@@ -50,7 +50,7 @@ Adding headers and footers to PDF (the same for both files)
 * In 'Change page size' section select 'A4' for 'Page Sizes' and set 'XOffset' to '0.1 in'. Then click on 'YOffset' input field, so the x offset gets registered. Select page range 'All' and click OK.
 * Select 'Edit PDF' tab and add headers and footers by clicking 'Header & Footer' button, selecting a preset from 'Saved Settings' dropdown menu and clicking ok. Popup will say that font 'Menlo' contains invalid encoding. This is fine.
 * Start by adding the bottom_line preset and check afterward if bottom line on the first page is aligned properly with the text. If it is not close the file and start over.
-* Repeat the process for each preset. When popup will ask you if you want to replace existing header or footer click 'Add New'.
+* Repeat the process for each preset. When popup asks you if you want to replace existing header or footer click 'Add New'.
 * If presets get lost, the font and the margins are as follow: Borders: left-line: 0.6, left-text: 0.8, top-line: 11.4, bottom-text: 0.27, right-text-odd: 0.57, font-name: menlo, font-size: 8.
 * Select 'Organize Pages' tab and remove last empty page.
 * Set title to 'Comprehensive Python Cheatsheet' and author to 'Jure Šorn' by selecting 'File/Properties...'.