diff --git a/src/calibre/ebooks/conversion/plumber.py b/src/calibre/ebooks/conversion/plumber.py
index 5778bbbabc..d4bdeb4562 100644
--- a/src/calibre/ebooks/conversion/plumber.py
+++ b/src/calibre/ebooks/conversion/plumber.py
@@ -212,7 +212,7 @@ OptionRecommendation(name='embed_all_fonts',
             'fonts, and if found, they will be embedded. Embedding will only work '
             'if the format you are converting to supports embedded fonts, such as '
             'EPUB, AZW3 or PDF. Please ensure that you have the proper license for embedding '
-            'the fonts used in this book.'
+            'the fonts used in this document.'
         )),
 
 OptionRecommendation(name='subset_embedded_fonts',
diff --git a/src/calibre/ebooks/oeb/polish/main.py b/src/calibre/ebooks/oeb/polish/main.py
index 69d03098c7..c5a7d4db6d 100644
--- a/src/calibre/ebooks/oeb/polish/main.py
+++ b/src/calibre/ebooks/oeb/polish/main.py
@@ -53,7 +53,7 @@ changes needed for the desired effect.</p>
 <p>Embed all fonts that are referenced in the document and are not already embedded.
 This will scan your computer for the fonts, and if they are found, they will be
 embedded into the document.</p>
-<p>Please ensure that you have the proper license for embedding the fonts used in this book.</p>
+<p>Please ensure that you have the proper license for embedding the fonts used in this document.</p>
 '''),
 
 'subset': _('''\