diff --git a/CMakeLists.txt b/CMakeLists.txt
index a810ac9df..2cbdbf00c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -458,7 +458,9 @@ if (GTSAM_INSTALL_CYTHON_TOOLBOX)
   if(NOT GTSAM_CYTHON_INSTALL_PATH)
     set(GTSAM_CYTHON_INSTALL_PATH "${CMAKE_INSTALL_PREFIX}/cython")
   endif()
-  set(GTSAM_EIGENCY_INSTALL_PATH ${GTSAM_CYTHON_INSTALL_PATH}/gtsam_eigency)
+  # Cython install path appended with Build type (e.g. cython, cythonDebug, etc).
+  set(GTSAM_CYTHON_INSTALL_FULLPATH "${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}")
+  set(GTSAM_EIGENCY_INSTALL_PATH ${GTSAM_CYTHON_INSTALL_FULLPATH}/gtsam_eigency)
   add_subdirectory(cython)
 else()
   set(GTSAM_INSTALL_CYTHON_TOOLBOX 0) # This will go into config.h
diff --git a/cmake/GtsamCythonWrap.cmake b/cmake/GtsamCythonWrap.cmake
index 6331d1e95..851f53cfe 100644
--- a/cmake/GtsamCythonWrap.cmake
+++ b/cmake/GtsamCythonWrap.cmake
@@ -184,7 +184,7 @@ function(install_cython_wrapped_library interface_header generated_files_path in
   # Split up filename to strip trailing '/' in GTSAM_CYTHON_INSTALL_PATH/subdirectory if there is one
   get_filename_component(location "${install_path}" PATH)
   get_filename_component(name "${install_path}" NAME)
-  message(STATUS "Installing Cython Toolbox to ${location}${GTSAM_BUILD_TAG}/${name}") #${GTSAM_CYTHON_INSTALL_PATH}"
+  message(STATUS "Installing Cython Toolbox to ${location}${GTSAM_BUILD_TAG}/${name}") #${GTSAM_CYTHON_INSTALL_FULLPATH}"
 
   if(GTSAM_BUILD_TYPE_POSTFIXES)
     foreach(build_type ${CMAKE_CONFIGURATION_TYPES})
diff --git a/cython/gtsam_eigency/CMakeLists.txt b/cython/gtsam_eigency/CMakeLists.txt
index 77bead834..da174d690 100644
--- a/cython/gtsam_eigency/CMakeLists.txt
+++ b/cython/gtsam_eigency/CMakeLists.txt
@@ -39,11 +39,11 @@ add_dependencies(cythonize_eigency cythonize_eigency_conversions cythonize_eigen
 
 # install
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-        DESTINATION "${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}"
+        DESTINATION "${GTSAM_CYTHON_INSTALL_FULLPATH}"
         PATTERN "CMakeLists.txt" EXCLUDE
         PATTERN "__init__.py.in" EXCLUDE)
 install(TARGETS cythonize_eigency_core cythonize_eigency_conversions
-        DESTINATION "${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}/gtsam_eigency")
-install(FILES ${OUTPUT_DIR}/conversions_api.h DESTINATION ${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}/gtsam_eigency)
+        DESTINATION "${GTSAM_CYTHON_INSTALL_FULLPATH}/gtsam_eigency")
+install(FILES ${OUTPUT_DIR}/conversions_api.h DESTINATION ${GTSAM_CYTHON_INSTALL_FULLPATH}/gtsam_eigency)
 configure_file(__init__.py.in ${OUTPUT_DIR}/__init__.py)
-install(FILES ${OUTPUT_DIR}/__init__.py DESTINATION ${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}/gtsam_eigency)
+install(FILES ${OUTPUT_DIR}/__init__.py DESTINATION ${GTSAM_CYTHON_INSTALL_FULLPATH}/gtsam_eigency)