diff --git a/.clang-tidy b/.clang-tidy
index 190d32f..8a30c2a 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -227,6 +227,7 @@
 modernize-use-transparent-functors,
 modernize-use-uncaught-exceptions,
 modernize-use-using,
+performance-faster-string-find,
 performance-for-range-copy,
 performance-implicit-conversion-in-loop,
 performance-inefficient-algorithm,
diff --git a/fault-monitor/fru-fault-monitor.cpp b/fault-monitor/fru-fault-monitor.cpp
index 6cb5b8a..cf64862 100644
--- a/fault-monitor/fru-fault-monitor.cpp
+++ b/fault-monitor/fru-fault-monitor.cpp
@@ -91,7 +91,7 @@
         return;
     }
 
-    auto pos = path.rfind("/");
+    auto pos = path.rfind('/');
     if (pos == std::string::npos)
     {
         using namespace xyz::openbmc_project::Common;