diff --git a/src/calibre/devices/kindle/driver.py b/src/calibre/devices/kindle/driver.py
index d3b5555c86..3e8fdac86f 100644
--- a/src/calibre/devices/kindle/driver.py
+++ b/src/calibre/devices/kindle/driver.py
@@ -313,7 +313,7 @@ class KINDLE2(KINDLE):
             ' <li>accurate: Based on the number of chapters, paragraphs, and visible lines in the book.'
             ' This method is designed to simulate an average paperback book where there are 32 lines per'
             ' page and a maximum of 70 characters per line.\n\n'
-            ' <li>pagebreak: The "pagebreak" method uses the presense of <mbp:pagebreak> tags within'
+            ' <li>pagebreak: The "pagebreak" method uses the presence of <mbp:pagebreak> tags within'
             ' the book to determine pages.</ul>'
             'Methods other than "fast" are going to be much slower.'
             ' Further, if "pagebreak" fails to determine a page count accurate will be used, and if '
diff --git a/src/calibre/gui2/tweak_book/editor/themes.py b/src/calibre/gui2/tweak_book/editor/themes.py
index ade364dbef..ebbb069667 100644
--- a/src/calibre/gui2/tweak_book/editor/themes.py
+++ b/src/calibre/gui2/tweak_book/editor/themes.py
@@ -500,7 +500,7 @@ class ThemeEditor(Dialog):
             does not have any effect as that rule is used only for the color of
             the blinking cursor.</p>
 
-            <p>As you make changes to your them on the left, the changes will
+            <p>As you make changes to your theme on the left, the changes will
             be reflected live in this panel.</p>
 
             <p xml:lang="und">