diff --git a/tests/clihighlight.html b/tests/clihighlight.html
index 575bc0e..015dcfd 100644
--- a/tests/clihighlight.html
+++ b/tests/clihighlight.html
@@ -804,6 +804,9 @@
 SELECT 
   @"weird variable name";
 
+SELECT 
+  :pdoParam;
+
 SELECT 
   "no closing quote
 
diff --git a/tests/compress.html b/tests/compress.html
index e8c6fe6..9edba05 100644
--- a/tests/compress.html
+++ b/tests/compress.html
@@ -74,6 +74,8 @@
 
 SELECT @"weird variable name";
 
+SELECT :pdoParam;
+
 SELECT "no closing quote
 
 SELECT [sqlserver] FROM [escap[e]]d style];
\ No newline at end of file
diff --git a/tests/format-highlight.html b/tests/format-highlight.html
index 3009897..e5abec2 100644
--- a/tests/format-highlight.html
+++ b/tests/format-highlight.html
@@ -804,6 +804,9 @@
 <pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> 
   <span style="color: orange;">@&quot;weird variable name&quot;</span><span >;</span></pre>
 
+<pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> 
+  <span style="color: orange;">:pdoParam</span><span >;</span></pre>
+
 <pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> 
   <span style="color: blue;">&quot;no closing quote</span></pre>
 
diff --git a/tests/format.html b/tests/format.html
index d2ea31e..9b5ddeb 100644
--- a/tests/format.html
+++ b/tests/format.html
@@ -803,6 +803,9 @@
 SELECT 
   @"weird variable name";
 
+SELECT 
+  :pdoParam;
+
 SELECT 
   "no closing quote
 
diff --git a/tests/highlight.html b/tests/highlight.html
index 4637eee..737f121 100644
--- a/tests/highlight.html
+++ b/tests/highlight.html
@@ -258,6 +258,8 @@
 
 <pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> <span style="color: orange;">@&quot;weird variable name&quot;</span><span >;</span></pre>
 
+<pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> <span style="color: orange;">:pdoParam</span><span >;</span></pre>
+
 <pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> <span style="color: blue;">&quot;no closing quote</span></pre>
 
 <pre style="color: black; background-color: white;"><span style="font-weight:bold;">SELECT</span> <span style="color: purple;">[sqlserver]</span> <span style="font-weight:bold;">FROM</span> <span style="color: purple;">[escap[e]]d style]</span><span >;</span></pre>
\ No newline at end of file
diff --git a/tests/sql.sql b/tests/sql.sql
index 7bd40c0..c601033 100644
--- a/tests/sql.sql
+++ b/tests/sql.sql
@@ -258,6 +258,8 @@ SELECT @ and b;
 
 SELECT @"weird variable name";
 
+SELECT :pdoParam;
+
 SELECT "no closing quote
 
 SELECT [sqlserver] FROM [escap[e]]d style];