diff --git a/resources/definitions/Mark2_for_Ultimaker2.def.json b/resources/definitions/Mark2_for_Ultimaker2.def.json
index 1aca2a3844..6867183081 100644
--- a/resources/definitions/Mark2_for_Ultimaker2.def.json
+++ b/resources/definitions/Mark2_for_Ultimaker2.def.json
@@ -58,9 +58,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 5
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "machine_heat_zone_length": {
             "default_value": 20
         },
diff --git a/resources/definitions/maker_starter.def.json b/resources/definitions/maker_starter.def.json
index 96dca118af..88c46e9333 100644
--- a/resources/definitions/maker_starter.def.json
+++ b/resources/definitions/maker_starter.def.json
@@ -47,9 +47,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 3
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "layer_height_0": {
             "default_value": 0.2
         },
diff --git a/resources/definitions/mendel90.def.json b/resources/definitions/mendel90.def.json
index 39cb4de8d3..b3d6d686c8 100644
--- a/resources/definitions/mendel90.def.json
+++ b/resources/definitions/mendel90.def.json
@@ -58,9 +58,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 5
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "machine_heat_zone_length": { 
             "default_value": 16
         },
diff --git a/resources/definitions/structur3d_discov3ry1_complete_um2plus.def.json b/resources/definitions/structur3d_discov3ry1_complete_um2plus.def.json
index e4893cacac..6f04cdd93c 100644
--- a/resources/definitions/structur3d_discov3ry1_complete_um2plus.def.json
+++ b/resources/definitions/structur3d_discov3ry1_complete_um2plus.def.json
@@ -76,9 +76,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 5
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "machine_heat_zone_length": {
             "default_value": 20
         },
diff --git a/resources/definitions/tam.def.json b/resources/definitions/tam.def.json
index 211049ca3d..0bc68f321a 100644
--- a/resources/definitions/tam.def.json
+++ b/resources/definitions/tam.def.json
@@ -47,7 +47,6 @@
 
         "machine_nozzle_tip_outer_diameter": { "default_value": 1 },
         "machine_nozzle_head_distance": { "default_value": 3 },
-        "machine_nozzle_expansion_angle": { "default_value": 45 },
 
         "machine_max_acceleration_x": { "default_value": 6000 },
         "machine_max_acceleration_y": { "default_value": 6000 },
diff --git a/resources/definitions/ultimaker2.def.json b/resources/definitions/ultimaker2.def.json
index 40fbdaf709..68b41feeb0 100644
--- a/resources/definitions/ultimaker2.def.json
+++ b/resources/definitions/ultimaker2.def.json
@@ -74,9 +74,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 3
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "machine_max_feedrate_x": {
             "default_value": 300
         },
diff --git a/resources/definitions/ultimaker2_plus.def.json b/resources/definitions/ultimaker2_plus.def.json
index 633e50bdba..7b9c0781f7 100644
--- a/resources/definitions/ultimaker2_plus.def.json
+++ b/resources/definitions/ultimaker2_plus.def.json
@@ -52,9 +52,6 @@
         "machine_nozzle_head_distance": {
             "default_value": 5
         },
-        "machine_nozzle_expansion_angle": {
-            "default_value": 45
-        },
         "machine_heat_zone_length": {
             "default_value": 20
         },