diff --git a/Source/FileListTransfer.cpp b/Source/FileListTransfer.cpp
index 28dcab500..ecc913908 100644
--- a/Source/FileListTransfer.cpp
+++ b/Source/FileListTransfer.cpp
@@ -759,7 +759,10 @@ void FileListTransfer::OnReferencePush(Packet *packet, bool isTheFullFile)
 	FLR_MemoryBlock mb;
 	if (fileListReceiver->pushedFiles.Has(onFileStruct.fileIndex)==false)
 	{
-		mb.flrMemoryBlock=(char*) rakMalloc_Ex(onFileStruct.byteLengthOfThisFile, _FILE_AND_LINE_);
+		if (onFileStruct.byteLengthOfThisFile <= RAKNET_MAX_RETRIEVABLE_FILESIZE)
+			mb.flrMemoryBlock=(char*) rakMalloc_Ex(onFileStruct.byteLengthOfThisFile, _FILE_AND_LINE_);
+		else
+			mb.flrMemoryBlock = nullptr;
 		fileListReceiver->pushedFiles.SetNew(onFileStruct.fileIndex, mb);
 	}
 	else
diff --git a/Source/RakNetDefines.h b/Source/RakNetDefines.h
index ea313c551..bf5817f3f 100644
--- a/Source/RakNetDefines.h
+++ b/Source/RakNetDefines.h
@@ -192,4 +192,12 @@
 
 //#define USE_THREADED_SEND
 
+// Controls the maximum retrievable filesize for incoming files using FileListTransfer.
+// The configured limit only applies for files which are transferred incrementally (which basically applies to any larger file).
+// Note that this also impacts the upper limit for memory allocations. It's suggested to redefine the value to a reasonable smaller size in the RakNetDefineOverrides.h header file.
+// For backwards compatibility with RakNet, the default is set to 4 GiB-1.
+#ifndef RAKNET_MAX_RETRIEVABLE_FILESIZE
+#define RAKNET_MAX_RETRIEVABLE_FILESIZE (0xFFFFFFFF)
+#endif
+
 #endif // __RAKNET_DEFINES_H