diff --git a/tests/input/abbreviations.xml b/tests/input/abbreviations.xml
index 7f75835c..44000d70 100644
--- a/tests/input/abbreviations.xml
+++ b/tests/input/abbreviations.xml
@@ -1,3 +1,5 @@
 <t>Various abbreviations which aren't end of sentence:
    Jr. AND Sr. AND i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.
+   Sentence with parentheses (a.k.a. Round brackets) -- done.  Start of next sentence.
+   Sentence with brackets [i.e. Square brackets] -- done.  Start of next sentence.
 </t>
diff --git a/tests/valid/abbreviations.html b/tests/valid/abbreviations.html
index 11b55e73..ed0482ed 100644
--- a/tests/valid/abbreviations.html
+++ b/tests/valid/abbreviations.html
@@ -1 +1 @@
-<p>Various abbreviations which aren't end of sentence: Jr. AND Sr. AND i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.  </p>
+<p>Various abbreviations which aren't end of sentence: Jr. AND Sr. AND i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.  Sentence with parentheses (a.k.a. Round brackets) -- done.  Start of next sentence.  Sentence with brackets [i.e. Square brackets] -- done.  Start of next sentence.  </p>
diff --git a/tests/valid/abbreviations.nroff b/tests/valid/abbreviations.nroff
index 7b4e0d21..b1833ef8 100644
--- a/tests/valid/abbreviations.nroff
+++ b/tests/valid/abbreviations.nroff
@@ -1,4 +1,7 @@
 .in 3
 
 Various abbreviations which aren't end of sentence: Jr. AND Sr. AND
-i.e. AND Mr. AND Mrs. etc. \%-- done.  Start of next sentence.
\ No newline at end of file
+i.e. AND Mr. AND Mrs. etc. \%-- done.  Start of next sentence.
+Sentence with parentheses (a.k.a. Round brackets) \%-- done.  Start of
+next sentence.  Sentence with brackets [i.e. Square brackets] \%--
+done.  Start of next sentence.
\ No newline at end of file
diff --git a/tests/valid/abbreviations.raw.txt b/tests/valid/abbreviations.raw.txt
index d9af8084..023bbc67 100644
--- a/tests/valid/abbreviations.raw.txt
+++ b/tests/valid/abbreviations.raw.txt
@@ -1,2 +1,5 @@
    Various abbreviations which aren't end of sentence: Jr. AND Sr. AND
-   i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.
\ No newline at end of file
+   i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.
+   Sentence with parentheses (a.k.a. Round brackets) -- done.  Start of
+   next sentence.  Sentence with brackets [i.e. Square brackets] --
+   done.  Start of next sentence.
\ No newline at end of file
diff --git a/tests/valid/abbreviations.txt b/tests/valid/abbreviations.txt
index d9af8084..023bbc67 100644
--- a/tests/valid/abbreviations.txt
+++ b/tests/valid/abbreviations.txt
@@ -1,2 +1,5 @@
    Various abbreviations which aren't end of sentence: Jr. AND Sr. AND
-   i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.
\ No newline at end of file
+   i.e. AND Mr. AND Mrs. etc. -- done.  Start of next sentence.
+   Sentence with parentheses (a.k.a. Round brackets) -- done.  Start of
+   next sentence.  Sentence with brackets [i.e. Square brackets] --
+   done.  Start of next sentence.
\ No newline at end of file