diff --git a/ConversionUtils.cpp b/ConversionUtils.cpp
index 4cea727..d59af99 100644
--- a/ConversionUtils.cpp
+++ b/ConversionUtils.cpp
@@ -60,6 +60,7 @@
                                const void* valueStart,
                                uint32_t numBytes,
                                const armnn::PermutationVector& mappings)
+    : m_Optional(false)
 {
     armnn::IgnoreUnused(numBytes);
     if (tensorInfo.GetNumBytes() != numBytes)