diff --git a/evmjit/libevmjit/Array.cpp b/evmjit/libevmjit/Array.cpp
index 21de061c6..92ba6193d 100644
--- a/evmjit/libevmjit/Array.cpp
+++ b/evmjit/libevmjit/Array.cpp
@@ -239,7 +239,9 @@ Array::Array(llvm::IRBuilder<>& _builder, llvm::Value* _array) :
 	m_setFunc([this](){ return createArraySetFunc(); }),
 	m_getFunc([this](){ return createArrayGetFunc(); }),
 	m_freeFunc([this](){ return createFreeFunc(); })
-{}
+{
+	m_builder.CreateStore(llvm::ConstantAggregateZero::get(getType()), m_array);
+}
 
 
 void Array::pop(llvm::Value* _count)
diff --git a/evmjit/libevmjit/Runtime.h b/evmjit/libevmjit/Runtime.h
index 5b8052330..4fc1705c4 100644
--- a/evmjit/libevmjit/Runtime.h
+++ b/evmjit/libevmjit/Runtime.h
@@ -26,9 +26,9 @@ private:
 	byte* m_memoryData = nullptr;
 	i256 m_memorySize;
 public:
-	byte* m_memData = nullptr; // FIXME: Remember to free memory
-	uint64_t m_memSize = 0;    // TODO: Init array in LLVM, to allow more optimization
-	uint64_t m_memCap = 0;
+	byte* m_memData; // FIXME: Remember to free memory
+	uint64_t m_memSize;
+	uint64_t m_memCap;
 };
 
 }