diff --git a/docs/usermanual-clusters.xml b/docs/usermanual-clusters.xml
index 8b64bdee35175ae1209d7b7fdec473263cb676f3..608371b00d7a5a5d271876c0ec7a634d11071a0f 100644
--- a/docs/usermanual-clusters.xml
+++ b/docs/usermanual-clusters.xml
@@ -290,11 +290,11 @@
   0 ,3,2,4   
 </programlisting>
     <para>
-      There's no way to differentitate between these two scenarios based
+      There's no way to differentiate between these two scenarios based
       on the cluster numbers alone.
     </para>
     <para>
-      Another problem appens with ligatures under level 2 if the
+      Another problem happens with ligatures under level 2 if the
       direction of the text is forced to opposite of its natural
       direction (e.g. left-to-right Arabic). But that's too much of a
       corner case to worry about.
diff --git a/docs/usermanual-install-harfbuzz.xml b/docs/usermanual-install-harfbuzz.xml
index 37450d0bb295a4762c8aef365d1ebeaca30808f9..899cc5bd671b3d87fcea4f02c289008d424abc22 100644
--- a/docs/usermanual-install-harfbuzz.xml
+++ b/docs/usermanual-install-harfbuzz.xml
@@ -50,7 +50,7 @@
       and hb-shape under <filename>util/</filename>.
     </para>
     <para>
-      If you are bootstraping from git, you need a few more tools before you
+      If you are bootstrapping from git, you need a few more tools before you
       can run <filename>autogen.sh</filename> for the first time. Namely,
       pkg-config and <ulink url="http://www.complang.org/ragel/">ragel</ulink>.
       Again, on Ubuntu / Debian:
diff --git a/src/hb-font.h b/src/hb-font.h
index 540cdcab953334a60b93d51ca7e0fe35f60b9d4b..c95b61d2da8993fa3bb281bcecb303916792ac88 100644
--- a/src/hb-font.h
+++ b/src/hb-font.h
@@ -456,7 +456,7 @@ hb_font_get_glyph_from_name (hb_font_t *font,
 /* high-level funcs, with fallback */
 
 /* Calls either hb_font_get_nominal_glyph() if variation_selector is 0,
- * otherwise callse hb_font_get_variation_glyph(). */
+ * otherwise calls hb_font_get_variation_glyph(). */
 HB_EXTERN hb_bool_t
 hb_font_get_glyph (hb_font_t *font,
 		   hb_codepoint_t unicode, hb_codepoint_t variation_selector,