diff --git a/build_msvc/common.init.vcxproj.in b/build_msvc/common.init.vcxproj.in
index 9710e50744..24d5922182 100644
--- a/build_msvc/common.init.vcxproj.in
+++ b/build_msvc/common.init.vcxproj.in
@@ -88,7 +88,7 @@
       <WarningLevel>Level3</WarningLevel>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <AdditionalOptions>/utf-8 /Zc:__cplusplus /std:c++20 %(AdditionalOptions)</AdditionalOptions>
-      <DisableSpecificWarnings>4018;4244;4267;4334;4715;4805</DisableSpecificWarnings>
+      <DisableSpecificWarnings>4018;4244;4267;4715;4805</DisableSpecificWarnings>
       <TreatWarningAsError>true</TreatWarningAsError>
       <PreprocessorDefinitions>_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;ZMQ_STATIC;NOMINMAX;WIN32;HAVE_CONFIG_H;_CRT_SECURE_NO_WARNINGS;_SCL_SECURE_NO_WARNINGS;_CONSOLE;_WIN32_WINNT=0x0601;_WIN32_IE=0x0501;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\..\src;..\..\src\minisketch\include;..\..\src\univalue\include;..\..\src\secp256k1\include;..\..\src\leveldb\include;..\..\src\leveldb\helpers\memenv;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
diff --git a/src/bech32.cpp b/src/bech32.cpp
index dce9b2e4cc..8e0025b8f4 100644
--- a/src/bech32.cpp
+++ b/src/bech32.cpp
@@ -241,7 +241,7 @@ constexpr std::array<uint32_t, 25> GenerateSyndromeConstants() {
     std::array<uint32_t, 25> SYNDROME_CONSTS{};
     for (int k = 1; k < 6; ++k) {
         for (int shift = 0; shift < 5; ++shift) {
-            int16_t b = GF1024_LOG.at(1 << shift);
+            int16_t b = GF1024_LOG.at(size_t{1} << shift);
             int16_t c0 = GF1024_EXP.at((997*k + b) % 1023);
             int16_t c1 = GF1024_EXP.at((998*k + b) % 1023);
             int16_t c2 = GF1024_EXP.at((999*k + b) % 1023);