diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index d17fcd4..dd67488 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -51,4 +51,3 @@ else()
 
     install(PROGRAMS testpartjson.py DESTINATION ${CMAKE_INSTALL_PARTIO_TESTDIR} RENAME testpartjson)
 endif()
-install(PROGRAMS testpartjson.py DESTINATION ${CMAKE_INSTALL_PARTIO_TESTDIR} RENAME testpartjson)