diff --git a/src/compiler_llvm/compilation_unit.cc b/src/compiler_llvm/compilation_unit.cc
index f654e48..d548976 100644
--- a/src/compiler_llvm/compilation_unit.cc
+++ b/src/compiler_llvm/compilation_unit.cc
@@ -60,8 +60,9 @@
 llvm::Module* makeLLVMModuleContents(llvm::Module* module);
 
 
-CompilationUnit::CompilationUnit(InstructionSet insn_set)
-: insn_set_(insn_set), context_(new llvm::LLVMContext()), mem_usage_(0) {
+CompilationUnit::CompilationUnit(InstructionSet insn_set, size_t elf_idx)
+: insn_set_(insn_set), elf_idx_(elf_idx), context_(new llvm::LLVMContext()),
+  mem_usage_(0) {
 
   // Create the module and include the runtime function declaration
   module_ = new llvm::Module("art", *context_);