diff --git a/csharp/ql/src/Useless code/FutileConditional.ql b/csharp/ql/src/Useless code/FutileConditional.ql
index 1000113185d4..d77fd55a434a 100644
--- a/csharp/ql/src/Useless code/FutileConditional.ql	
+++ b/csharp/ql/src/Useless code/FutileConditional.ql	
@@ -16,7 +16,8 @@ predicate emptyStmt(Stmt s) {
   or
   s =
     any(BlockStmt bs |
-      bs.getNumberOfStmts() = 0
+      bs.getNumberOfStmts() = 0 and
+      not any(CommentBlock cb).getParent() = bs
       or
       bs.getNumberOfStmts() = 1 and
       emptyStmt(bs.getStmt(0))
diff --git a/csharp/ql/src/change-notes/2025-03-05-useless-if-statement.md b/csharp/ql/src/change-notes/2025-03-05-useless-if-statement.md
new file mode 100644
index 000000000000..3d62fe373e1e
--- /dev/null
+++ b/csharp/ql/src/change-notes/2025-03-05-useless-if-statement.md
@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Don't consider an if-statement to be *useless* in `cs/useless-if-statement` if there is at least a comment.
diff --git a/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.cs b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.cs
new file mode 100644
index 000000000000..fffdaf9de743
--- /dev/null
+++ b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.cs	
@@ -0,0 +1,34 @@
+using System;
+
+class FutileConditionalTest
+{
+
+    public void M(string s)
+    {
+        if (s.Length > 0) ; // $ Alert
+
+        if (s.Length > 1)
+        {
+        } // $ Alert
+
+        if (s.Length > 2) // GOOD: because of else-branch
+        {
+        }
+        else
+        {
+            Console.WriteLine("hello");
+        }
+
+        if (s.Length > 3)
+        {
+        }
+        else
+        {
+        } // $ Alert
+
+        if (s.Length > 4)
+        {
+            // GOOD: Because of the comment.
+        }
+    }
+}
diff --git a/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.expected b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.expected
new file mode 100644
index 000000000000..db9b75043cba
--- /dev/null
+++ b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.expected	
@@ -0,0 +1,3 @@
+| FutileConditional.cs:8:9:8:27 | if (...) ... | If-statement with an empty then-branch and no else-branch. |
+| FutileConditional.cs:10:9:12:9 | if (...) ... | If-statement with an empty then-branch and no else-branch. |
+| FutileConditional.cs:22:9:27:9 | if (...) ... | If-statement with an empty then-branch and no else-branch. |
diff --git a/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.qlref b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.qlref
new file mode 100644
index 000000000000..6f3548889789
--- /dev/null
+++ b/csharp/ql/test/query-tests/Useless Code/FutileConditional/FutileConditional.qlref	
@@ -0,0 +1,2 @@
+query: Useless code/FutileConditional.ql
+postprocess: utils/test/InlineExpectationsTestQuery.ql
diff --git a/csharp/ql/test/query-tests/Useless Code/FutileConditional/options b/csharp/ql/test/query-tests/Useless Code/FutileConditional/options
new file mode 100644
index 000000000000..75c39b4541ba
--- /dev/null
+++ b/csharp/ql/test/query-tests/Useless Code/FutileConditional/options	
@@ -0,0 +1,2 @@
+semmle-extractor-options: /nostdlib /noconfig
+semmle-extractor-options: --load-sources-from-project:${testdir}/../../../resources/stubs/_frameworks/Microsoft.NETCore.App/Microsoft.NETCore.App.csproj