diff --git a/src/Mod/Fem/femsolver/calculix/write_mesh.py b/src/Mod/Fem/femsolver/calculix/write_mesh.py
index a00c8071d2e9..6c179600fe37 100644
--- a/src/Mod/Fem/femsolver/calculix/write_mesh.py
+++ b/src/Mod/Fem/femsolver/calculix/write_mesh.py
@@ -52,7 +52,7 @@ def write_mesh(ccxwriter):
             meshtools.write_D_network_element_to_inputfile(ccxwriter.femmesh_file)
 
         # Check to see if pipe beam sections are in analysis and use B32R element type
-        if ccxwriter.beamsec_obj.SectionType == "Pipe":
+        if ccxwriter.member.geos_beamsection_obj.SectionType == "Pipe":
             meshtools.use_B32R_for_pipe_section(ccxwriter.femmesh_file)
 
         inpfile = codecs.open(ccxwriter.file_name, "w", encoding="utf-8")
@@ -74,7 +74,7 @@ def write_mesh(ccxwriter):
             meshtools.write_D_network_element_to_inputfile(ccxwriter.femmesh_file)
 
         # Check to see if pipe beam sections are in analysis and use B32R element type
-        if ccxwriter.beamsec_obj.SectionType == "Pipe":
+        if ccxwriter.member.geos_beamsection_obj.SectionType == "Pipe":
             meshtools.use_B32R_for_pipe_section(ccxwriter.femmesh_file)
 
         # reopen file with "append" to add all the rest