diff --git a/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.cpp b/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.cpp
index f8d7d1cc..cfa25007 100644
--- a/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.cpp
+++ b/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.cpp
@@ -170,7 +170,7 @@ namespace Base
 		return bytes;
 	}
 
-	bool Base64::UUDecode(const char *source, unsigned sourceLen, unsigned char *dest, unsigned *destLen)
+	bool Base64::UUDecode(const char *source, unsigned sourceLen, unsigned char *dest, int *destLen)
 	{
 		unsigned char q[3];
 		unsigned index;
diff --git a/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.h b/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.h
index 73542495..6f1d0858 100644
--- a/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.h
+++ b/external/3rd/library/soePlatform/ChatAPI/utils/Base/Base64.h
@@ -15,7 +15,7 @@ namespace Base
 	public:
 		static bool UUEncode(const unsigned char *source, unsigned sourceLen, char *dest, unsigned destLen);
 		static bool UUEncode(const unsigned char *source, unsigned sourceLen, std::string &destString);
-		static bool UUDecode(const char *source, unsigned sourceLen, unsigned char *dest, unsigned *destLen);
+		static bool UUDecode(const char *source, unsigned sourceLen, unsigned char *dest, int *destLen);
 		static bool UUDecode(const char *source, unsigned sourceLen, std::string &destString);
 
 		// these don't *exactly* belong here, but it's a convenient place for them