diff --git a/cpp/ql/test/TestUtilities/InlineExpectationsTest.qll b/cpp/ql/test/TestUtilities/InlineExpectationsTest.qll
index a4d264b2703c..b5e8f4a4d42c 100644
--- a/cpp/ql/test/TestUtilities/InlineExpectationsTest.qll
+++ b/cpp/ql/test/TestUtilities/InlineExpectationsTest.qll
@@ -173,10 +173,10 @@ abstract class InlineExpectationsTest extends string {
 /**
  * RegEx pattern to match a comment containing one or more expected results. The comment must have
  * `$` as its first non-whitespace character. Any subsequent character
- * is treated as part of the expected results, except that the comment may contain a `//` sequence
+ * is treated as part of the expected results, except that the comment may contain a ` //` sequence
  * to treat the remainder of the line as a regular (non-interpreted) comment.
  */
-private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|/[^/])*)(?://.*)?" }
+private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|[^ ]//|/[^/])*)(?: //.*)?" }
 
 /**
  * The possible columns in an expectation comment. The `TDefaultColumn` branch represents the first
diff --git a/csharp/ql/test/TestUtilities/InlineExpectationsTest.qll b/csharp/ql/test/TestUtilities/InlineExpectationsTest.qll
index a4d264b2703c..b5e8f4a4d42c 100644
--- a/csharp/ql/test/TestUtilities/InlineExpectationsTest.qll
+++ b/csharp/ql/test/TestUtilities/InlineExpectationsTest.qll
@@ -173,10 +173,10 @@ abstract class InlineExpectationsTest extends string {
 /**
  * RegEx pattern to match a comment containing one or more expected results. The comment must have
  * `$` as its first non-whitespace character. Any subsequent character
- * is treated as part of the expected results, except that the comment may contain a `//` sequence
+ * is treated as part of the expected results, except that the comment may contain a ` //` sequence
  * to treat the remainder of the line as a regular (non-interpreted) comment.
  */
-private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|/[^/])*)(?://.*)?" }
+private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|[^ ]//|/[^/])*)(?: //.*)?" }
 
 /**
  * The possible columns in an expectation comment. The `TDefaultColumn` branch represents the first
diff --git a/java/ql/test/TestUtilities/InlineExpectationsTest.qll b/java/ql/test/TestUtilities/InlineExpectationsTest.qll
index a4d264b2703c..b5e8f4a4d42c 100644
--- a/java/ql/test/TestUtilities/InlineExpectationsTest.qll
+++ b/java/ql/test/TestUtilities/InlineExpectationsTest.qll
@@ -173,10 +173,10 @@ abstract class InlineExpectationsTest extends string {
 /**
  * RegEx pattern to match a comment containing one or more expected results. The comment must have
  * `$` as its first non-whitespace character. Any subsequent character
- * is treated as part of the expected results, except that the comment may contain a `//` sequence
+ * is treated as part of the expected results, except that the comment may contain a ` //` sequence
  * to treat the remainder of the line as a regular (non-interpreted) comment.
  */
-private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|/[^/])*)(?://.*)?" }
+private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|[^ ]//|/[^/])*)(?: //.*)?" }
 
 /**
  * The possible columns in an expectation comment. The `TDefaultColumn` branch represents the first
diff --git a/python/ql/test/TestUtilities/InlineExpectationsTest.qll b/python/ql/test/TestUtilities/InlineExpectationsTest.qll
index a4d264b2703c..b5e8f4a4d42c 100644
--- a/python/ql/test/TestUtilities/InlineExpectationsTest.qll
+++ b/python/ql/test/TestUtilities/InlineExpectationsTest.qll
@@ -173,10 +173,10 @@ abstract class InlineExpectationsTest extends string {
 /**
  * RegEx pattern to match a comment containing one or more expected results. The comment must have
  * `$` as its first non-whitespace character. Any subsequent character
- * is treated as part of the expected results, except that the comment may contain a `//` sequence
+ * is treated as part of the expected results, except that the comment may contain a ` //` sequence
  * to treat the remainder of the line as a regular (non-interpreted) comment.
  */
-private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|/[^/])*)(?://.*)?" }
+private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|[^ ]//|/[^/])*)(?: //.*)?" }
 
 /**
  * The possible columns in an expectation comment. The `TDefaultColumn` branch represents the first
diff --git a/ruby/ql/test/TestUtilities/InlineExpectationsTest.qll b/ruby/ql/test/TestUtilities/InlineExpectationsTest.qll
index a4d264b2703c..b5e8f4a4d42c 100644
--- a/ruby/ql/test/TestUtilities/InlineExpectationsTest.qll
+++ b/ruby/ql/test/TestUtilities/InlineExpectationsTest.qll
@@ -173,10 +173,10 @@ abstract class InlineExpectationsTest extends string {
 /**
  * RegEx pattern to match a comment containing one or more expected results. The comment must have
  * `$` as its first non-whitespace character. Any subsequent character
- * is treated as part of the expected results, except that the comment may contain a `//` sequence
+ * is treated as part of the expected results, except that the comment may contain a ` //` sequence
  * to treat the remainder of the line as a regular (non-interpreted) comment.
  */
-private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|/[^/])*)(?://.*)?" }
+private string expectationCommentPattern() { result = "\\s*\\$((?:[^/]|[^ ]//|/[^/])*)(?: //.*)?" }
 
 /**
  * The possible columns in an expectation comment. The `TDefaultColumn` branch represents the first