diff --git a/include/xo/jit/MachPipeline.hpp b/include/xo/jit/MachPipeline.hpp
index 4ffc029c..8deede36 100644
--- a/include/xo/jit/MachPipeline.hpp
+++ b/include/xo/jit/MachPipeline.hpp
@@ -131,10 +131,9 @@ namespace xo {
              *  each with its own LLVMContext
              **/
             ref::rp<LlvmContext> llvm_cx_;
-            //std::unique_ptr<llvm::LLVMContext> llvm_cx_;
             /** builder for intermediate-representation objects **/
             std::unique_ptr<llvm::IRBuilder<>> llvm_ir_builder_;
-            /** a module (1:1 with library) being prepared by llvm.
+            /** a module (1:1 with library ?) being prepared by llvm.
              *  IR-level -- does not contain machine code
              *
              *  - function names are unique within a module.
@@ -144,7 +143,7 @@ namespace xo {
             /** map global names to functions/variables **/
             std::map<std::string, xo::ref::rp<Expression>> global_env_;
             /** map variable names (formal parameters) to
-             *  corresponding llvm interactor
+             *  corresponding llvm IR.
              *
              *  only supports one level atm (i.e. only top-level functions)
              **/
diff --git a/src/jit/MachPipeline.cpp b/src/jit/MachPipeline.cpp
index e02e7316..02b27b00 100644
--- a/src/jit/MachPipeline.cpp
+++ b/src/jit/MachPipeline.cpp
@@ -45,9 +45,9 @@ namespace xo {
 
             static llvm::ExitOnError llvm_exit_on_err;
 
-            std::unique_ptr<Jit> kal_jit = llvm_exit_on_err(Jit::Create());
+            std::unique_ptr<Jit> jit = llvm_exit_on_err(Jit::Create());
 
-            return std::unique_ptr<MachPipeline>(new MachPipeline(std::move(kal_jit)
+            return std::unique_ptr<MachPipeline>(new MachPipeline(std::move(jit)
                                             ));
         } /*make*/