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 0e4feab9b3..21632ad3ea 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
@@ -53,6 +53,7 @@ Body 1
 End
 
 Material 1
+  Density = Real 7.9e-06
   Poisson ratio = Real 0.3
   Youngs Modulus = Real 200000000.0
 End
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 a9f28364b4..7a65425ef7 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
@@ -53,6 +53,7 @@ Body 1
 End
 
 Material 1
+  Density = Real 7.9e-06
   Poisson ratio = Real 0.3
   Youngs Modulus = Real 210000000.0
 End
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 803bdb53c2..2d411d0c7c 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
@@ -54,6 +54,7 @@ Body 1
 End
 
 Material 1
+  Density = Real 7900.0
   Poisson ratio = Real 0.3
   Youngs Modulus = Real 210000000000.0
 End
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 6221ca7fb0..296f05583a 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
@@ -53,6 +53,7 @@ Body 1
 End
 
 Material 1
+  Density = Real 7.9e-06
   Poisson ratio = Real 0.3
   Youngs Modulus = Real 210000000.0
 End
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 fab6d80689..8a772c3e2e 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
@@ -53,6 +53,7 @@ Body 1
 End
 
 Material 1
+  Density = Real 7.9e-06
   Poisson ratio = Real 0.3
   Youngs Modulus = Real 210000000.0
 End