diff --git a/test/lib/library.exp b/test/lib/library.exp
index 95170711..c6a290ea 100644
--- a/test/lib/library.exp
+++ b/test/lib/library.exp
@@ -6,11 +6,11 @@ package require textutil::string
 
 
 
-# Execute a bash command and make sure the exit status is succesful.
+# Execute a bash command and make sure the exit status is successful.
 # The command is expected to return no output.  See `assert_bash_exec_out' if
 # you want to catch output from the bash command.
 # If not, output the error message.
-# @param string $cmd  Bash command line to execute.  If emptry string (""), the
+# @param string $cmd  Bash command line to execute.  If empty string (""), the
 #                     exit status of the previously executed bash command will be 
 #                     checked; specify `title' to adorn the error message.
 # @param string $title  (optional) Command title.  If empty, `cmd' is used.
@@ -75,7 +75,7 @@ proc assert_bash_type {command} {
 # Make sure the expected list is returned by executing the specified command.
 # @param list $expected
 # @param string $cmd  Command given to generate items
-# @param string $test  (optional) Test titel.  Default is "$cmd<TAB> should show completions"
+# @param string $test  (optional) Test title.  Default is "$cmd<TAB> should show completions"
 # @param string $prompt  (optional) Bash prompt.  Default is "/@"
 # @param integer $size  (optional) Chunk size.  Default is 20.
 # @result boolean  True if successful, False if not
@@ -99,7 +99,7 @@ proc assert_bash_list {expected cmd {test ""} {prompt /@} {size 20}} {
 # command.
 # @param list $expected
 # @param string $cmd  Command given to generate items
-# @param string $test  (optional) Test titel.  Default is "$cmd<TAB> should show completions"
+# @param string $test  (optional) Test title.  Default is "$cmd<TAB> should show completions"
 # @param string $prompt  (optional) Bash prompt.  Default is "/@"
 # @param integer $size  (optional) Chunk size.  Default is 20.
 # @param string $cword  (optional) Last argument of $cmd which is an
@@ -240,7 +240,7 @@ proc assert_complete_any {cmd {test ""} {prompt /@}} {
 # @param list $expected
 # @param string $cmd  Command given to generate items
 # @param string $dir  Subdirectory to attempt completion in.  The directory must be relative from the $TESTDIR and without a trailing slash.  E.g. `fixtures/evince'
-# @param string $test  (optional) Test titel.  Default is "$cmd<TAB> should show completions"
+# @param string $test  (optional) Test title.  Default is "$cmd<TAB> should show completions"
 # @param string $prompt  (optional) Bash prompt.  Default is "/@"
 # @param integer $size  (optional) Chunk size.  Default is 20.
 # @param string $cword  (optional) Last word of $cmd to complete.  See: assert_complete()
@@ -262,7 +262,7 @@ proc assert_complete_dir {expected cmd dir {test ""} {size 20} {cword ""}} {
 # @param list $expected  List of all completions.
 # @param string $cmd  Command given to generate items
 # @param string $partial  Word to complete
-# @param string $test  (optional) Test titel.  Default is "$cmd<TAB> should show completions"
+# @param string $test  (optional) Test title.  Default is "$cmd<TAB> should show completions"
 # @param string $prompt  (optional) Bash prompt.  Default is "/@"
 # @param integer $size  (optional) Chunk size.  Default is 20.
 # @param list $filters  (optional) List of filters to apply to this function to tweak
@@ -385,7 +385,7 @@ proc assert_env_unmodified {{sed ""} {file ""} {diff ""}} {
 #       executed successful.
 # @param string $command
 # @param string $stdout  (optional) Reference to variable to hold stdout.
-# @param string $test (optional)  Test titel
+# @param string $test (optional)  Test title
 # @see assert_bash_exec()
 proc assert_exec {cmd {stdout ''} {test ''}} {
     if {$test == ""} {set test "$cmd should execute successful"}