diff --git a/input/src/main/scala/fix/InterpolationToStringWarnTest.scala b/input/src/main/scala/fix/InterpolationToStringWarnTest.scala
index e42052c..5e823a8 100644
--- a/input/src/main/scala/fix/InterpolationToStringWarnTest.scala
+++ b/input/src/main/scala/fix/InterpolationToStringWarnTest.scala
@@ -10,6 +10,7 @@ object InterpolationToStringWarnTest {
   def x1(i: Int, a: A) = {
     s" ${i.toString} b ${i.toString} c" // assert: InterpolationToStringWarn
     s" ${2.toString} b " // assert: InterpolationToStringWarn
+    s" ${i.toString()} b " // assert: InterpolationToStringWarn
     f" ${i.toString} b "
     s" ${a.toString(i)} b c "
   }
diff --git a/rules/src/main/scala/fix/InterpolationToStringWarn.scala b/rules/src/main/scala/fix/InterpolationToStringWarn.scala
index e7e9a76..becbfd4 100644
--- a/rules/src/main/scala/fix/InterpolationToStringWarn.scala
+++ b/rules/src/main/scala/fix/InterpolationToStringWarn.scala
@@ -45,6 +45,11 @@ private object InterpolationToStringWarn {
             x @ Term.Name("toString")
           ) =>
         x
+      case Term.Apply.After_4_6_0(
+            Term.Select(_, x @ Term.Name("toString")),
+            Term.ArgClause(Nil, None)
+          ) =>
+        x
     }
   }
 }