diff --git a/src/calibre/gui2/viewer/documentview.py b/src/calibre/gui2/viewer/documentview.py
index 69704de1c7..6f6f202619 100644
--- a/src/calibre/gui2/viewer/documentview.py
+++ b/src/calibre/gui2/viewer/documentview.py
@@ -544,7 +544,7 @@ class DocumentView(QWebView): # {{{
         self.goto_location_action.setMenu(self.goto_location_menu)
         self.grabGesture(Qt.SwipeGesture)
 
-        self.restore_fonts_action = QAction(_('Normal font size'), self)
+        self.restore_fonts_action = QAction(_('Default font size'), self)
         self.restore_fonts_action.setCheckable(True)
         self.restore_fonts_action.triggered.connect(self.restore_font_size)
 
diff --git a/src/calibre/gui2/viewer/main.py b/src/calibre/gui2/viewer/main.py
index 0ca35ebf46..cb1d978c0e 100644
--- a/src/calibre/gui2/viewer/main.py
+++ b/src/calibre/gui2/viewer/main.py
@@ -697,11 +697,11 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
         self.view.shrink_fonts()
 
     def magnification_changed(self, val):
-        tt = _('Make font size %(which)s\nCurrent magnification: %(mag).1f')
+        tt = _('%(which)s font size\nCurrent magnification: %(mag).1f')
         self.action_font_size_larger.setToolTip(
-                tt %dict(which=_('larger'), mag=val))
+                tt %dict(which=_('Increase'), mag=val))
         self.action_font_size_smaller.setToolTip(
-                tt %dict(which=_('smaller'), mag=val))
+                tt %dict(which=_('Decrease'), mag=val))
         self.action_font_size_larger.setEnabled(self.view.multiplier < 3)
         self.action_font_size_smaller.setEnabled(self.view.multiplier > 0.2)
 
diff --git a/src/calibre/gui2/viewer/main.ui b/src/calibre/gui2/viewer/main.ui
index d6deb315b2..d6eb7e2fd9 100644
--- a/src/calibre/gui2/viewer/main.ui
+++ b/src/calibre/gui2/viewer/main.ui
@@ -198,7 +198,7 @@
      <normaloff>:/images/font_size_larger.png</normaloff>:/images/font_size_larger.png</iconset>
    </property>
    <property name="text">
-    <string>Font size larger</string>
+    <string>Increase font size</string>
    </property>
   </action>
   <action name="action_font_size_smaller">
@@ -207,7 +207,7 @@
      <normaloff>:/images/font_size_smaller.png</normaloff>:/images/font_size_smaller.png</iconset>
    </property>
    <property name="text">
-    <string>Font size smaller</string>
+    <string>Decrease font size</string>
    </property>
   </action>
   <action name="action_table_of_contents">