diff --git a/src/test/basics/TaggedCache_test.cpp b/src/test/basics/TaggedCache_test.cpp
index 6955be5e78..5de18b7870 100644
--- a/src/test/basics/TaggedCache_test.cpp
+++ b/src/test/basics/TaggedCache_test.cpp
@@ -206,7 +206,7 @@ public:
                 bool
                 operator==(std::string const& other) const
                 {
-                    return data == data;
+                    return data == other.data;
                 }
             };