diff --git a/extra/lensfun/fix-python-module-install.patch b/extra/lensfun/fix-python-module-install.patch
new file mode 100644
index 000000000..dfe342888
--- /dev/null
+++ b/extra/lensfun/fix-python-module-install.patch
@@ -0,0 +1,36 @@
+diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
+index 2f6f8f14..eb332288 100644
+--- a/apps/CMakeLists.txt
++++ b/apps/CMakeLists.txt
+@@ -22,16 +22,17 @@ ENDIF(INSTALL_HELPER_SCRIPTS)
+ # Inspired by http://bloerg.net/2012/11/10/cmake-and-distutils.html
+ 
+ FIND_PROGRAM(PYTHON "python3")
+-IF(PYTHON)
+-    SET(SETUP_PY_IN "${CMAKE_CURRENT_SOURCE_DIR}/setup.py.in")
+-    SET(SETUP_PY    "${CMAKE_CURRENT_BINARY_DIR}/setup.py")
+-    SET(DEPS_IN     "${CMAKE_CURRENT_SOURCE_DIR}/lensfun/__init__.py.in")
+-    SET(DEPS        "${CMAKE_CURRENT_BINARY_DIR}/lensfun/__init__.py")
+-    SET(OUTPUT      "${CMAKE_CURRENT_BINARY_DIR}/build/timestamp")
+ 
+-    CONFIGURE_FILE(${SETUP_PY_IN} ${SETUP_PY})
+-    CONFIGURE_FILE(${DEPS_IN} ${DEPS})
++SET(SETUP_PY_IN "${CMAKE_CURRENT_SOURCE_DIR}/setup.py.in")
++SET(SETUP_PY    "${CMAKE_CURRENT_BINARY_DIR}/setup.py")
++SET(DEPS_IN     "${CMAKE_CURRENT_SOURCE_DIR}/lensfun/__init__.py.in")
++SET(DEPS        "${CMAKE_CURRENT_BINARY_DIR}/lensfun/__init__.py")
++SET(OUTPUT      "${CMAKE_CURRENT_BINARY_DIR}/build/timestamp")
+ 
++CONFIGURE_FILE(${SETUP_PY_IN} ${SETUP_PY})
++CONFIGURE_FILE(${DEPS_IN} ${DEPS})
++
++IF(INSTALL_PYTHON_MODULE)
+     ADD_CUSTOM_COMMAND(OUTPUT ${OUTPUT}
+                        COMMAND ${PYTHON} ${SETUP_PY} build
+                        COMMAND ${CMAKE_COMMAND} -E touch ${OUTPUT}
+@@ -43,4 +44,4 @@ IF(PYTHON)
+       SET(SETUP_PY_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+     ENDIF()
+     INSTALL(CODE "execute_process(COMMAND ${PYTHON} ${SETUP_PY} install --prefix=\$ENV{DESTDIR}${SETUP_PY_INSTALL_PREFIX})")
+-ENDIF(PYTHON)
++ENDIF(INSTALL_PYTHON_MODULE)