diff --git a/cmake/GtsamCythonWrap.cmake b/cmake/GtsamCythonWrap.cmake
index d6190447f..51ef4ab92 100644
--- a/cmake/GtsamCythonWrap.cmake
+++ b/cmake/GtsamCythonWrap.cmake
@@ -5,10 +5,10 @@ unset(PYTHON_EXECUTABLE CACHE)
 unset(CYTHON_EXECUTABLE CACHE)
 unset(PYTHON_INCLUDE_DIR CACHE)
 unset(PYTHON_MAJOR_VERSION CACHE)
+unset(PYTHON_LIBRARY CACHE)
 
-if(PYTHON_LIBRARY)
-  
-else()
+# Allow override from command line
+if(NOT PYTHON_LIBRARY)
   if(GTSAM_PYTHON_VERSION STREQUAL "Default")
     find_package(PythonInterp REQUIRED)
     find_package(PythonLibs REQUIRED)
diff --git a/gtsam/3rdparty/metis/CMakeLists.txt b/gtsam/3rdparty/metis/CMakeLists.txt
index c3b25ef73..de46165ff 100644
--- a/gtsam/3rdparty/metis/CMakeLists.txt
+++ b/gtsam/3rdparty/metis/CMakeLists.txt
@@ -34,7 +34,7 @@ else()
   set(METIS_LIBRARY_TYPE STATIC)
 endif()
 
-# Configure libmetis library.
+# Allow a static METIS while building GTSAM as dynamic
 if(BUILD_STATIC_METIS)
   set(METIS_LIBRARY_TYPE STATIC)
 endif()