diff --git a/source/Lib/CommonLib/TrQuant.cpp b/source/Lib/CommonLib/TrQuant.cpp
index d633033d47e0142f0020896cdfae90a50455bb5e..3206bef3e636f83a3d0f3fbb77490721d831500a 100644
--- a/source/Lib/CommonLib/TrQuant.cpp
+++ b/source/Lib/CommonLib/TrQuant.cpp
@@ -84,7 +84,7 @@ InvTrans *fastInvTrans[NUM_TRANS_TYPE][g_numTransformMatrixSizes] =
 //! \{
 
 #if JVET_O0105_ICT
-int64_t square( int d ) { return d*d; }
+static inline int64_t square( const int d ) { return d * (int64_t)d; }
 
 template<int signedMode> std::pair<int64_t,int64_t> fwdTransformCbCr( const PelBuf &resCb, const PelBuf &resCr, PelBuf& resC1, PelBuf& resC2 )
 {