diff --git a/src/backends/backendsCommon/test/OptimizedNetworkTests.cpp b/src/backends/backendsCommon/test/OptimizedNetworkTests.cpp
index dcea9ef..012737e 100644
--- a/src/backends/backendsCommon/test/OptimizedNetworkTests.cpp
+++ b/src/backends/backendsCommon/test/OptimizedNetworkTests.cpp
@@ -96,7 +96,7 @@
         Optimize(*net, backends, runtime->GetDeviceSpec(), armnn::OptimizerOptions(), errMessages);
         FAIL("Should have thrown an exception.");
     }
-    catch (const armnn::InvalidArgumentException& e)
+    catch (const armnn::InvalidArgumentException&)
     {
         // Different exceptions are thrown on different backends
     }
@@ -216,7 +216,7 @@
         Optimize(*net, backends, runtime->GetDeviceSpec(), armnn::OptimizerOptions(), errMessages);
         FAIL("Should have thrown an exception.");
     }
-    catch (const armnn::InvalidArgumentException& e)
+    catch (const armnn::InvalidArgumentException&)
     {
         // Different exceptions are thrown on different backends
     }
diff --git a/src/backends/backendsCommon/test/layerTests/CastTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/CastTestImpl.cpp
index aec57db..92bce4f 100644
--- a/src/backends/backendsCommon/test/layerTests/CastTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/CastTestImpl.cpp
@@ -113,7 +113,7 @@
                                                const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
                                                const armnn::ITensorHandleFactory& tensorHandleFactory)
 {
-    std::vector<u_int8_t> inputValues = { 1, 3, 1, 3, 1, 3, 1, 3, 1,
+    std::vector<uint8_t> inputValues = { 1, 3, 1, 3, 1, 3, 1, 3, 1,
                                          3, 1, 3, 1, 2, 1, 3, 1, 3 };
     std::vector<float> outputValues  = { 1.0f, 3.0f, 1.0f, 3.0f, 1.0f, 3.0f, 1.0f, 3.0f, 1.0f,
                                          3.0f, 1.0f, 3.0f, 1.0f, 2.0f, 1.0f, 3.0f, 1.0f, 3.0f };
diff --git a/src/backends/backendsCommon/test/layerTests/L2NormalizationTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/L2NormalizationTestImpl.cpp
index e242fd3..11c9766 100644
--- a/src/backends/backendsCommon/test/layerTests/L2NormalizationTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/L2NormalizationTestImpl.cpp
@@ -16,6 +16,8 @@
 
 #include <test/TensorHelpers.hpp>
 
+#include <numeric>
+
 namespace
 {