diff --git a/go/ql/lib/change-notes/2024-05-08-fix-flow-variadic-builtin-variable.md b/go/ql/lib/change-notes/2024-05-08-fix-flow-variadic-builtin-variable.md
new file mode 100644
index 000000000000..9d9dabb34a2e
--- /dev/null
+++ b/go/ql/lib/change-notes/2024-05-08-fix-flow-variadic-builtin-variable.md
@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Fixed a bug that stopped data flow from being followed through variadic arguments to built-in functions or to functions called using a variable.
diff --git a/go/ql/lib/semmle/go/dataflow/internal/DataFlowNodes.qll b/go/ql/lib/semmle/go/dataflow/internal/DataFlowNodes.qll
index 6b230bc728f8..947491b44bbc 100644
--- a/go/ql/lib/semmle/go/dataflow/internal/DataFlowNodes.qll
+++ b/go/ql/lib/semmle/go/dataflow/internal/DataFlowNodes.qll
@@ -455,8 +455,8 @@ module Public {
     CallNode getCallNode() { result = call }
 
     override Type getType() {
-      exists(Function f | f = call.getTarget() |
-        result = f.getParameterType(f.getNumParameter() - 1)
+      exists(SignatureType t | t = call.getCall().getCalleeType() |
+        result = t.getParameterType(t.getNumParameter() - 1)
       )
     }