diff --git a/parser/common/parser_fp16_t.cc b/parser/common/parser_fp16_t.cc
index 3ce5c6b..fd94a9e 100644
--- a/parser/common/parser_fp16_t.cc
+++ b/parser/common/parser_fp16_t.cc
@@ -978,7 +978,7 @@ static void SetValByUint16Val(const uint16_t &input_val, const uint16_t &sign, u
       }
     } else {
       e_ret = static_cast<int16_t>(kFp16ExpBias);
-      m_tmp = m_tmp << (kManBitLength - len);
+      m_tmp = m_tmp << static_cast<uint16_t>(kManBitLength - len);
       e_ret = e_ret + (len - 1);
     }
     auto m_ret = static_cast<uint16_t>(m_tmp);
@@ -1116,7 +1116,7 @@ fp16_t &fp16_t::operator=(const uint32_t &ui_val) {
     uint32_t m_min = kFp16ManHideBit;
     uint32_t m_max = m_min << 1;
     uint16_t len = static_cast<uint16_t>(GetManBitLength(m_tmp));
-    if (len > kDim11) {
+    if (len > static_cast<>kDim11) {
       e_ret = kFp16ExpBias + kFp16ManLen;
       uint32_t m_trunc = 0;
       uint32_t trunc_mask = 1;