diff --git a/src/Mod/Fem/femtest/data/elmer/box_static_0_mm.sif b/src/Mod/Fem/femtest/data/elmer/box_static_0_mm.sif
index 5485030952..61231489df 100644
--- a/src/Mod/Fem/femtest/data/elmer/box_static_0_mm.sif
+++ b/src/Mod/Fem/femtest/data/elmer/box_static_0_mm.sif
@@ -7,7 +7,7 @@ End
 Solver 1
   Bubbles = Logical False
   Calculate Pangle = Logical False
-  Calculate Principal = Logical False
+  Calculate Principal = Logical True
   Calculate Strains = Logical False
   Calculate Stresses = Logical False
   Displace mesh = Logical False
diff --git a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_0_mm.sif b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_0_mm.sif
index 843124f0b1..fbb76526c8 100644
--- a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_0_mm.sif
+++ b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_0_mm.sif
@@ -7,7 +7,7 @@ End
 Solver 1
   Bubbles = Logical False
   Calculate Pangle = Logical False
-  Calculate Principal = Logical False
+  Calculate Principal = Logical True
   Calculate Strains = Logical False
   Calculate Stresses = Logical False
   Displace mesh = Logical False
diff --git a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_1_si.sif b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_1_si.sif
index df6ffd5688..170a9b22dc 100644
--- a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_1_si.sif
+++ b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_faceload_1_si.sif
@@ -7,7 +7,7 @@ End
 Solver 1
   Bubbles = Logical False
   Calculate Pangle = Logical False
-  Calculate Principal = Logical False
+  Calculate Principal = Logical True
   Calculate Strains = Logical False
   Calculate Stresses = Logical False
   Displace mesh = Logical False
diff --git a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_nodeload_0_mm.sif b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_nodeload_0_mm.sif
index 6d9718904a..2cb4d519a8 100644
--- a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_nodeload_0_mm.sif
+++ b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_nodeload_0_mm.sif
@@ -7,7 +7,7 @@ End
 Solver 1
   Bubbles = Logical False
   Calculate Pangle = Logical False
-  Calculate Principal = Logical False
+  Calculate Principal = Logical True
   Calculate Strains = Logical False
   Calculate Stresses = Logical False
   Displace mesh = Logical False
diff --git a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_prescribeddisplacement_0_mm.sif b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_prescribeddisplacement_0_mm.sif
index f73078b88c..59b26744df 100644
--- a/src/Mod/Fem/femtest/data/elmer/ccxcantilever_prescribeddisplacement_0_mm.sif
+++ b/src/Mod/Fem/femtest/data/elmer/ccxcantilever_prescribeddisplacement_0_mm.sif
@@ -7,7 +7,7 @@ End
 Solver 1
   Bubbles = Logical False
   Calculate Pangle = Logical False
-  Calculate Principal = Logical False
+  Calculate Principal = Logical True
   Calculate Strains = Logical False
   Calculate Stresses = Logical False
   Displace mesh = Logical False