diff --git a/OgreMain/src/OgreFreeImageCodec2.cpp b/OgreMain/src/OgreFreeImageCodec2.cpp
index f9f7b62dad6..d007affe065 100644
--- a/OgreMain/src/OgreFreeImageCodec2.cpp
+++ b/OgreMain/src/OgreFreeImageCodec2.cpp
@@ -62,6 +62,12 @@ THE SOFTWARE.
 
 #include <sstream>
 
+// We want to be compatible with both FreeImage and FreeImageRe, but first specifies sizes as DWORD and second as uint32_t
+// On Windows both DWORD (unsigned long) and uint32_t are separate 32bit types, so pointers to them can not be mixed
+#ifndef FISIZE
+#define FISIZE decltype( FIICCPROFILE::size ) // DWORD for FreeImage, uint32_t for FreeImageRe
+#endif
+
 namespace Ogre
 {
     FreeImageCodec2::RegisteredCodecList FreeImageCodec2::msCodecList;
@@ -425,7 +431,7 @@ namespace Ogre
         FreeImage_SaveToMemory( (FREE_IMAGE_FORMAT)mFreeImageType, fiBitmap, mem );
         // Grab data information
         uint8_t *data;
-        uint32_t size;
+        FISIZE size;
         FreeImage_AcquireMemory( mem, &data, &size );
         // Copy data into our own buffer
         // Because we're asking MemoryDataStream to free this, must create in a compatible way