diff --git a/external/ours/library/crypto/src/shared/original/cryptlib.cpp b/external/ours/library/crypto/src/shared/original/cryptlib.cpp
index 4341b5b7..86e2d4d3 100644
--- a/external/ours/library/crypto/src/shared/original/cryptlib.cpp
+++ b/external/ours/library/crypto/src/shared/original/cryptlib.cpp
@@ -51,7 +51,7 @@ void StreamCipher::ProcessString(byte *outString, const byte *inString, unsigned
 void StreamCipher::ProcessString(byte *inoutString, unsigned int length)
 {
 	while(length--) {
-		*inoutString++;
+		(*inoutString)++;
 		*inoutString = ProcessByte(*inoutString);
 	}
 }