diff --git a/src/libxrpl/tx/wasm/WasmiVM.cpp b/src/libxrpl/tx/wasm/WasmiVM.cpp
index 4d41c537ef..93dab303c1 100644
--- a/src/libxrpl/tx/wasm/WasmiVM.cpp
+++ b/src/libxrpl/tx/wasm/WasmiVM.cpp
@@ -822,7 +822,7 @@ readLEB128(Bytes const& wasmCode, size_t& offset)
     while (offset < wasmCode.size())
     {
         auto byte = wasmCode[offset++];
-        result |= (byte & 0x7F) << shift;
+        result |= static_cast<uint32_t>(byte & 0x7F) << shift;
         if ((byte & 0x80) == 0)
         {
             break;