diff --git a/pid/zone.cpp b/pid/zone.cpp
index 0c9718a..b1da7ec 100644
--- a/pid/zone.cpp
+++ b/pid/zone.cpp
@@ -324,7 +324,7 @@
     }
 }
 
-Sensor* PIDZone::getSensor(std::string name)
+Sensor* PIDZone::getSensor(const std::string& name)
 {
     return _mgr.getSensor(name);
 }
diff --git a/pid/zone.hpp b/pid/zone.hpp
index 3e2166c..6db7b7e 100644
--- a/pid/zone.hpp
+++ b/pid/zone.hpp
@@ -31,7 +31,7 @@
     virtual float getMaxRPMRequest() const = 0;
     virtual bool getFailSafeMode() const = 0;
     virtual float getFailSafePercent() const = 0;
-    virtual Sensor* getSensor(std::string name) = 0;
+    virtual Sensor* getSensor(const std::string& name) = 0;
 };
 
 /*
@@ -68,7 +68,7 @@
     float getFailSafePercent(void) const override;
     float getMinThermalRpmSetPt(void) const;
 
-    Sensor* getSensor(std::string name) override;
+    Sensor* getSensor(const std::string& name) override;
     void determineMaxRPMRequest(void);
     void updateFanTelemetry(void);
     void updateSensors(void);
diff --git a/test/zone_mock.hpp b/test/zone_mock.hpp
index 8dbf24a..79947fb 100644
--- a/test/zone_mock.hpp
+++ b/test/zone_mock.hpp
@@ -16,5 +16,5 @@
     MOCK_CONST_METHOD0(getMaxRPMRequest, float());
     MOCK_CONST_METHOD0(getFailSafeMode, bool());
     MOCK_CONST_METHOD0(getFailSafePercent, float());
-    MOCK_METHOD1(getSensor, Sensor*(std::string));
+    MOCK_METHOD1(getSensor, Sensor*(const std::string&));
 };