diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98a96282..12000d20 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,7 +43,8 @@ message(STATUS "Git revision: ${HERMES_REVISION}")
 option(HERMES_BUILD_BOUT "Build BOUT++ in external/BOUT-dev" ON)
 if(HERMES_BUILD_BOUT)
   set(BOUT_BUILD_EXAMPLES, OFF) # Don't create example makefiles
-  add_subdirectory(external/BOUT-dev)
+  set(HERMES_BOUT_SRC "external/BOUT-dev" CACHE STRING "Directory of BOUT++ dir")
+  add_subdirectory(${HERMES_BOUT_SRC} ${CMAKE_CURRENT_BINARY_DIR}/external/BOUT-dev)
 else()
   find_package(bout++ REQUIRED)
 endif()
diff --git a/src/evolve_pressure.cxx b/src/evolve_pressure.cxx
index 38f1e9f4..265cf20a 100644
--- a/src/evolve_pressure.cxx
+++ b/src/evolve_pressure.cxx
@@ -432,7 +432,7 @@ void EvolvePressure::outputVars(Options& state) {
       set_with_attrs(state[std::string("kappa_par_") + name], kappa_par,
                      {{"time_dimension", "t"},
                       {"units", "W / m / eV"},
-                      {"conversion", Pnorm * Omega_ci * SQ(rho_s0)},
+                      {"conversion", (Pnorm * Omega_ci * SQ(rho_s0) )/ Tnorm},
                       {"long_name", name + " heat conduction coefficient"},
                       {"species", name},
                       {"source", "evolve_pressure"}});