diff --git a/cmake/TestMacros.cmake b/cmake/TestMacros.cmake
index 43975d038d0ac9c89caeeab5a0d1c3a44e153f0d..fb2a798ca7e738218dbac2f8881acb06ee4aeda2 100644
--- a/cmake/TestMacros.cmake
+++ b/cmake/TestMacros.cmake
@@ -29,7 +29,7 @@ macro(install_python_module_files)
 
     install(FILES
       ${ARGN}
-      DESTINATION "${ython3_SITELIB}/dal"
+      DESTINATION "${Python3_SITELIB}/dal"
       COMPONENT python
     )