diff --git a/errata.html b/errata.html
index 4876833..9dee8ae 100644
--- a/errata.html
+++ b/errata.html
@@ -41,6 +41,15 @@ pre {
     (Thanks to Victor Farazdagi, 2015-11-30.)
   </p>
 
+  <p>
+    <b>p.40, ¶4</b>: For "value of the underlying type", read
+    "value of an unnamed type with the same underlying type".
+    <!-- The "unnamed" restriction is there for basic types, which
+         are named, so it forbids Celsius(0)==float64(0), for instance.
+     -->
+    (Thanks to Carlos Romero Brox, 2015-12-19.)
+  </p>
+
   <p>
     <b>p.40, ¶1</b>: The paragraph should end with a period, not a comma.
     (Thanks to Victor Farazdagi, 2015-11-30.)
@@ -56,6 +65,12 @@ pre {
     (Corrected in the second printing.)
   </p>
 
+  <p>
+    <b>p.52, ¶9</b>: For "The integer arithmetic operators", read
+    "The arithmetic operators".
+    (Thanks to Yoshiki Shibata, 2015-12-20.)
+  </p>
+
   <p>
     <b>p.68</b>: The table of UTF-8 encodings is missing a bit from each first byte.
     The corrected table is shown below.
@@ -80,6 +95,11 @@ pre {
     (Corrected in the second printing.)
   </p>
 
+  <p>
+    <b>p.75, ¶4</b>: for "<code>%u</code>", read "%<code>o</code>".
+    (Thanks to William Hannish, 2015-12-21.)
+  </p>
+
   <p>
     <b>p.76</b>: The comment <code>// "time.Duration 5ms0s</code> should have
     a closing double-quotation mark.