diff --git a/alethzero/CMakeLists.txt b/alethzero/CMakeLists.txt
index 93609e54c..25bd3de59 100644
--- a/alethzero/CMakeLists.txt
+++ b/alethzero/CMakeLists.txt
@@ -7,6 +7,11 @@ if (${CMAKE_MAJOR_VERSION} GREATER 2)
 	cmake_policy(SET CMP0043 OLD)
 endif()
 
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+	# Supress warnings for qt headers for clang+ccache
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-inconsistent-missing-override")
+endif ()
+
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 aux_source_directory(. SRC_LIST)
 
diff --git a/libethereum/TransactionQueue.h b/libethereum/TransactionQueue.h
index 407250530..ad8bd4a87 100644
--- a/libethereum/TransactionQueue.h
+++ b/libethereum/TransactionQueue.h
@@ -89,7 +89,7 @@ private:
 	struct UnverifiedTransaction
 	{
 		UnverifiedTransaction() {}
-		UnverifiedTransaction(bytesConstRef const& _t, h512 const& _nodeId): transaction(std::move(_t.toBytes())), nodeId(_nodeId) {}
+		UnverifiedTransaction(bytesConstRef const& _t, h512 const& _nodeId): transaction(_t.toBytes()), nodeId(_nodeId) {}
 		UnverifiedTransaction(UnverifiedTransaction&& _t): transaction(std::move(_t.transaction)) {}
 		UnverifiedTransaction& operator=(UnverifiedTransaction&& _other) { transaction = std::move(_other.transaction); nodeId = std::move(_other.nodeId); return *this; }
 
diff --git a/mix/CMakeLists.txt b/mix/CMakeLists.txt
index 6a434534f..01102ee53 100644
--- a/mix/CMakeLists.txt
+++ b/mix/CMakeLists.txt
@@ -15,6 +15,11 @@ include_directories(BEFORE ${JSONCPP_INCLUDE_DIRS})
 include_directories(${Boost_INCLUDE_DIRS})
 include_directories(BEFORE ..)
 
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+	# Supress warnings for qt headers for clang+ccache
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-inconsistent-missing-override")
+endif ()
+
 find_package (Qt5WebEngine QUIET)
 qt5_add_resources(UI_RESOURCES res.qrc qml.qrc)