diff --git a/csharp/ql/test/library-tests/dataflow/library/FlowSummaries.expected b/csharp/ql/test/library-tests/dataflow/library/FlowSummaries.expected
index 91a6bd12235..77bf7a61b87 100644
--- a/csharp/ql/test/library-tests/dataflow/library/FlowSummaries.expected
+++ b/csharp/ql/test/library-tests/dataflow/library/FlowSummaries.expected
@@ -3668,8 +3668,19 @@
 | System.IO;StreamReader;false;ReadLineAsync;();;Argument[Qualifier];ReturnValue;taint;manual |
 | System.IO;StreamReader;false;ReadToEnd;();;Argument[Qualifier];ReturnValue;taint;manual |
 | System.IO;StreamReader;false;ReadToEndAsync;();;Argument[Qualifier];ReturnValue;taint;manual |
-| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;generated |
-| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[1];Argument[Qualifier];taint;generated |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.IO.FileStreamOptions);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean,System.IO.FileStreamOptions);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean,System.Int32);;Argument[0];Argument[Qualifier];taint;manual |
 | System.IO;StreamReader;false;get_BaseStream;();;Argument[Qualifier];ReturnValue;taint;generated |
 | System.IO;StreamReader;false;get_CurrentEncoding;();;Argument[Qualifier];ReturnValue;taint;generated |
 | System.IO;StreamWriter;false;StreamWriter;(System.IO.Stream,System.Text.Encoding,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;generated |
diff --git a/csharp/ql/test/library-tests/dataflow/library/FlowSummariesFiltered.expected b/csharp/ql/test/library-tests/dataflow/library/FlowSummariesFiltered.expected
index 8b7bd50931f..a29da0ebb32 100644
--- a/csharp/ql/test/library-tests/dataflow/library/FlowSummariesFiltered.expected
+++ b/csharp/ql/test/library-tests/dataflow/library/FlowSummariesFiltered.expected
@@ -2815,8 +2815,19 @@
 | System.IO;Stream;true;ReadAsync;(System.Byte[],System.Int32,System.Int32,System.Threading.CancellationToken);;Argument[Qualifier];Argument[0].Element;taint;manual |
 | System.IO;Stream;true;Write;(System.Byte[],System.Int32,System.Int32);;Argument[0].Element;Argument[Qualifier];taint;manual |
 | System.IO;Stream;true;WriteAsync;(System.Byte[],System.Int32,System.Int32,System.Threading.CancellationToken);;Argument[0].Element;Argument[Qualifier];taint;manual |
-| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;generated |
-| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[1];Argument[Qualifier];taint;generated |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.IO.Stream,System.Text.Encoding,System.Boolean,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.IO.FileStreamOptions);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean,System.IO.FileStreamOptions);;Argument[0];Argument[Qualifier];taint;manual |
+| System.IO;StreamReader;false;StreamReader;(System.String,System.Text.Encoding,System.Boolean,System.Int32);;Argument[0];Argument[Qualifier];taint;manual |
 | System.IO;StreamReader;false;get_BaseStream;();;Argument[Qualifier];ReturnValue;taint;generated |
 | System.IO;StreamReader;false;get_CurrentEncoding;();;Argument[Qualifier];ReturnValue;taint;generated |
 | System.IO;StreamWriter;false;StreamWriter;(System.IO.Stream,System.Text.Encoding,System.Int32,System.Boolean);;Argument[0];Argument[Qualifier];taint;generated |