diff --git a/layers/layer1_scientific/.layerapi2_extra_env b/layers/layer1_scientific/.layerapi2_extra_env
index 0bba2d41..61642149 100644
--- a/layers/layer1_scientific/.layerapi2_extra_env
+++ b/layers/layer1_scientific/.layerapi2_extra_env
@@ -1,2 +1,3 @@
+MAGPLUS_HOME={MFEXT_HOME}/opt/scientific
 NCARG_ROOT={MFEXT_HOME}/opt/scientific
 SPATIALINDEX_C_LIBRARY={MFEXT_HOME}/opt/scientific/lib
diff --git a/layers/layer4_python3_scientific/.layerapi2_extra_env b/layers/layer4_python3_scientific/.layerapi2_extra_env
index 7393d1a4..7fdf5d7f 100644
--- a/layers/layer4_python3_scientific/.layerapi2_extra_env
+++ b/layers/layer4_python3_scientific/.layerapi2_extra_env
@@ -1,4 +1,3 @@
-MAGPLUS_HOME={MFEXT_HOME}/opt/python3_scientific
 MAGPLUS_QUIET=ON
 ECMWFLIBS_ECCODES={MFEXT_HOME}/opt/scientific/lib/libeccodes.so
 ECMWFLIBS_MAGPLUS={MFEXT_HOME}/opt/scientific/lib/libMagPlus.so