diff --git a/libevmjit/Ext.cpp b/libevmjit/Ext.cpp
index c30b0a1e38..cd741ad24a 100644
--- a/libevmjit/Ext.cpp
+++ b/libevmjit/Ext.cpp
@@ -22,7 +22,9 @@ namespace jit
 
 Ext::Ext(RuntimeManager& _runtimeManager, Memory& _memoryMan):
 	RuntimeHelper(_runtimeManager),
-	m_memoryMan(_memoryMan)
+	m_memoryMan(_memoryMan),
+	m_funcs{},
+	m_argAllocas{}
 {
 	m_size = m_builder.CreateAlloca(Type::Size, nullptr, "env.size");
 }
diff --git a/libevmjit/Ext.h b/libevmjit/Ext.h
index e6f1e46675..86a8a6190d 100644
--- a/libevmjit/Ext.h
+++ b/libevmjit/Ext.h
@@ -65,8 +65,8 @@ private:
 	llvm::Value* m_size;
 	llvm::Value* m_data = nullptr;
 
-	std::array<llvm::Function*, sizeOf<EnvFunc>::value> m_funcs = {{}};
-	std::array<llvm::Value*, 8> m_argAllocas = {{}};
+	std::array<llvm::Function*, sizeOf<EnvFunc>::value> m_funcs;
+	std::array<llvm::Value*, 8> m_argAllocas;
 	size_t m_argCounter = 0;
 
 	llvm::CallInst* createCall(EnvFunc _funcId, std::initializer_list<llvm::Value*> const& _args);