diff --git a/src/Mod/Fem/Init.py b/src/Mod/Fem/Init.py
index 7aca64a3b7..7da674c38d 100644
--- a/src/Mod/Fem/Init.py
+++ b/src/Mod/Fem/Init.py
@@ -84,12 +84,10 @@ FreeCAD.addExportType(
     "feminout.importYamlJsonMesh",
 )
 
-FreeCAD.addImportType("FEM mesh Z88 (*i1.txt *I1.TXT)", "feminout.importZ88Mesh")
-FreeCAD.addExportType("FEM mesh Z88 (*i1.txt)", "feminout.importZ88Mesh")
+FreeCAD.addImportType("FEM mesh Z88 (*.txt *.TXT)", "feminout.importZ88Mesh")
+FreeCAD.addExportType("FEM mesh Z88 (*.txt)", "feminout.importZ88Mesh")
 
-FreeCAD.addImportType(
-    "FEM result Z88 displacements (*o2.txt *O2.TXT)", "feminout.importZ88O2Results"
-)
+FreeCAD.addImportType("FEM result Z88 displacements (*.txt *.TXT)", "feminout.importZ88O2Results")
 
 if "BUILD_FEM_VTK" in FreeCAD.__cmake__:
     FreeCAD.addImportType(