diff --git a/tests/performance_tests/rct_mlsag.h b/tests/performance_tests/rct_mlsag.h
index 59eae074e..da0c064fd 100644
--- a/tests/performance_tests/rct_mlsag.h
+++ b/tests/performance_tests/rct_mlsag.h
@@ -82,6 +82,6 @@ public:
 private:
   rct::keyV sk;
   rct::keyM P;
-  size_t ind;
+  size_t ind{};
   rct::mgSig IIccss;
 };