diff --git a/doc/debugging_with_gdb.html b/doc/debugging_with_gdb.html
index fd2c831925..3899ac92d5 100644
--- a/doc/debugging_with_gdb.html
+++ b/doc/debugging_with_gdb.html
@@ -256,7 +256,7 @@ Use the "l" or "list" command to inspect source code.
-List a specific part of the source parametrizing "list" with a
+List a specific part of the source parameterizing "list" with a
function name (it must be qualified with its package name).
net/http package's
Request.ParseMultipartForm
method will now return an error if the body's Content-Type
-is not mutipart/form-data.
+is not multipart/form-data.
Prior to Go 1.3 it would silently fail and return nil.
Code that relies on the previous behavior should be updated.