diff --git a/libevmasm/Assembly.cpp b/libevmasm/Assembly.cpp
index f1c239574..45b95d552 100644
--- a/libevmasm/Assembly.cpp
+++ b/libevmasm/Assembly.cpp
@@ -680,7 +680,7 @@ LinkerObject const& Assembly::assemble(bool eof) const
 			size_t tagId = static_cast<size_t>(i.data());
 			assertThrow(ret.bytecode.size() < 0xffffffffL, AssemblyException, "Tag too large.");
 			assertThrow(m_tagPositionsInBytecode[tagId] == numeric_limits<size_t>::max(), AssemblyException, "Duplicate tag position.");
-			m_tagPositionsInBytecode[tagId] = ret.bytecode.size();
+			m_tagPositionsInBytecode[tagId] = ret.bytecode.size() - codeStart;
 			ret.bytecode.push_back(static_cast<uint8_t>(Instruction::JUMPDEST));
 			break;
 		}