diff --git a/python/ql/test/library-tests/PointsTo/calls/CallPointsTo.expected b/python/ql/test/library-tests/PointsTo/calls/CallPointsTo.expected
index 627f433b847..101e971cb37 100644
--- a/python/ql/test/library-tests/PointsTo/calls/CallPointsTo.expected
+++ b/python/ql/test/library-tests/PointsTo/calls/CallPointsTo.expected
@@ -13,3 +13,5 @@
 | 40 | ControlFlowNode for f() | Function f |
 | 41 | ControlFlowNode for C() | class C |
 | 42 | ControlFlowNode for Attribute() | Method(Function C.n, C()) |
+| 45 | ControlFlowNode for open() | Builtin-function open |
+| 46 | ControlFlowNode for open() | Builtin-function open |
diff --git a/python/ql/test/library-tests/PointsTo/calls/GetACall.expected b/python/ql/test/library-tests/PointsTo/calls/GetACall.expected
index dc3ac87cdf1..51051e1de00 100644
--- a/python/ql/test/library-tests/PointsTo/calls/GetACall.expected
+++ b/python/ql/test/library-tests/PointsTo/calls/GetACall.expected
@@ -17,3 +17,5 @@
 | 41 | ControlFlowNode for C() | class C |
 | 42 | ControlFlowNode for Attribute() | Function C.n |
 | 42 | ControlFlowNode for Attribute() | Method(Function C.n, C()) |
+| 45 | ControlFlowNode for open() | Builtin-function open |
+| 46 | ControlFlowNode for open() | Builtin-function open |
diff --git a/python/ql/test/library-tests/PointsTo/calls/getArgumentForCall.expected b/python/ql/test/library-tests/PointsTo/calls/getArgumentForCall.expected
index 54e4ef8dafc..9cb8b3e9862 100644
--- a/python/ql/test/library-tests/PointsTo/calls/getArgumentForCall.expected
+++ b/python/ql/test/library-tests/PointsTo/calls/getArgumentForCall.expected
@@ -26,3 +26,5 @@
 | 42 | ControlFlowNode for Attribute() | Function C.n | 0 | ControlFlowNode for c |
 | 42 | ControlFlowNode for Attribute() | Function C.n | 1 | ControlFlowNode for IntegerLiteral |
 | 42 | ControlFlowNode for Attribute() | Method(Function C.n, C()) | 0 | ControlFlowNode for IntegerLiteral |
+| 45 | ControlFlowNode for open() | Builtin-function open | 0 | ControlFlowNode for Str |
+| 45 | ControlFlowNode for open() | Builtin-function open | 1 | ControlFlowNode for Str |
diff --git a/python/ql/test/library-tests/PointsTo/calls/test.py b/python/ql/test/library-tests/PointsTo/calls/test.py
index 0b5a7237e7a..a8c7210b4ec 100644
--- a/python/ql/test/library-tests/PointsTo/calls/test.py
+++ b/python/ql/test/library-tests/PointsTo/calls/test.py
@@ -40,3 +40,7 @@ len(l)
 f(arg0=0, arg1=1, arg2=2)
 c = C()
 c.n(arg1=1)
+
+# positional/keyword arguments for a builtin function
+open("foo.txt", "rb") # TODO: Not handled by getNamedArgumentForCall
+open(file="foo.txt", mode="rb") # TODO: Not handled by either getNamedArgumentForCall or getArgumentForCall