diff --git a/include/exiv2/image.hpp b/include/exiv2/image.hpp
index bb4e4698..5b47ea58 100644
--- a/include/exiv2/image.hpp
+++ b/include/exiv2/image.hpp
@@ -479,9 +479,13 @@ class EXIV2API Image {
 
  private:
   // DATA
-  ImageType imageType_;                    //!< Image type
-  uint16_t supportedMetadata_;             //!< Bitmap with all supported metadata types
-  bool writeXmpFromPacket_;                //!< Determines the source when writing XMP
+  ImageType imageType_;         //!< Image type
+  uint16_t supportedMetadata_;  //!< Bitmap with all supported metadata types
+#ifdef EXV_HAVE_XMP_TOOLKIT
+  bool writeXmpFromPacket_{false};  //!< Determines the source when writing XMP
+#else
+  bool writeXmpFromPacket_{true};  //!< Determines the source when writing XMP
+#endif
   ByteOrder byteOrder_{invalidByteOrder};  //!< Byte order
 
   std::map<int, std::string> tags_;  //!< Map of tags
diff --git a/src/image.cpp b/src/image.cpp
index 6f648a9d..1a30d866 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -128,14 +128,7 @@ std::string pathOfFileUrl(const std::string& url) {
 // class member definitions
 namespace Exiv2 {
 Image::Image(ImageType type, uint16_t supportedMetadata, BasicIo::UniquePtr io) :
-    io_(std::move(io)),
-    imageType_(type),
-    supportedMetadata_(supportedMetadata),
-#ifdef EXV_HAVE_XMP_TOOLKIT
-    writeXmpFromPacket_(false) {
-#else
-    writeXmpFromPacket_(true) {
-#endif
+    io_(std::move(io)), imageType_(type), supportedMetadata_(supportedMetadata) {
 }
 
 void Image::printStructure(std::ostream&, PrintStructureOption, size_t /*depth*/) {