diff --git a/CMake/variants/variants.lcs157 b/CMake/variants/variants.lcs157
index 1e70de71e0b9d86b4c0e0f32fbdba10342bd8c1d..b49ff7921ce35065e9a2d819c1ae3707234daaf4 100644
--- a/CMake/variants/variants.lcs157
+++ b/CMake/variants/variants.lcs157
@@ -2,6 +2,7 @@
 # AS: put under comment as LOFAR general rule is to use shared libs now. 
 #option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
 
+set(PYTHON_EXECUTABLE "/usr/bin/python3")
 set(WINCC_ROOT_DIR /opt/WinCC_OA/3.16)
 set(CASACORE_ROOT_DIR "/opt/casacore")
 set(CASAREST_ROOT_DIR "/opt/casarest")