diff --git a/minetest.conf.example b/minetest.conf.example
index d1da0ff8..f599ca7a 100644
--- a/minetest.conf.example
+++ b/minetest.conf.example
@@ -60,6 +60,9 @@ default:torch 99,default:cobble 99
 # Default value is true.
 #enable_bed_night_skip = true
 
+# If enabled, fences and walls cannot be jumped over.
+#enable_fence_tall = false
+
 # Whether the engine's spawn search, which does not check for a suitable
 # starting biome, is used.
 # Default value is false.
diff --git a/mods/default/functions.lua b/mods/default/functions.lua
index 0f3cb764..2a4fdfeb 100644
--- a/mods/default/functions.lua
+++ b/mods/default/functions.lua
@@ -273,6 +273,7 @@ end
 --
 -- Fence registration helper
 --
+local fence_collision_extra = minetest.settings:get_bool("enable_fence_tall") and 3/8 or 0
 
 function default.register_fence(name, def)
 	minetest.register_craft({
@@ -291,17 +292,27 @@ function default.register_fence(name, def)
 		drawtype = "nodebox",
 		node_box = {
 			type = "connected",
-			fixed = {{-1/8, -1/2, -1/8, 1/8, 1/2, 1/8}},
+			fixed = {-1/8, -1/2, -1/8, 1/8, 1/2, 1/8},
 			-- connect_top =
 			-- connect_bottom =
-			connect_front = {{-1/16,3/16,-1/2,1/16,5/16,-1/8},
-				{-1/16,-5/16,-1/2,1/16,-3/16,-1/8}},
-			connect_left = {{-1/2,3/16,-1/16,-1/8,5/16,1/16},
-				{-1/2,-5/16,-1/16,-1/8,-3/16,1/16}},
-			connect_back = {{-1/16,3/16,1/8,1/16,5/16,1/2},
-				{-1/16,-5/16,1/8,1/16,-3/16,1/2}},
-			connect_right = {{1/8,3/16,-1/16,1/2,5/16,1/16},
-				{1/8,-5/16,-1/16,1/2,-3/16,1/16}},
+			connect_front = {{-1/16,  3/16, -1/2,   1/16,  5/16, -1/8 },
+				         {-1/16, -5/16, -1/2,   1/16, -3/16, -1/8 }},
+			connect_left =  {{-1/2,   3/16, -1/16, -1/8,   5/16,  1/16},
+				         {-1/2,  -5/16, -1/16, -1/8,  -3/16,  1/16}},
+			connect_back =  {{-1/16,  3/16,  1/8,   1/16,  5/16,  1/2 },
+				         {-1/16, -5/16,  1/8,   1/16, -3/16,  1/2 }},
+			connect_right = {{ 1/8,   3/16, -1/16,  1/2,   5/16,  1/16},
+				         { 1/8,  -5/16, -1/16,  1/2,  -3/16,  1/16}}
+		},
+		collision_box = {
+			type = "connected",
+			fixed = {-1/8, -1/2, -1/8, 1/8, 1/2 + fence_collision_extra, 1/8},
+			-- connect_top =
+			-- connect_bottom =
+			connect_front = {-1/8, -1/2, -1/2,  1/8, 1/2 + fence_collision_extra, -1/8},
+			connect_left =  {-1/2, -1/2, -1/8, -1/8, 1/2 + fence_collision_extra,  1/8},
+			connect_back =  {-1/8, -1/2,  1/8,  1/8, 1/2 + fence_collision_extra,  1/2},
+			connect_right = { 1/8, -1/2, -1/8,  1/2, 1/2 + fence_collision_extra,  1/8}
 		},
 		connects_to = {"group:fence", "group:wood", "group:tree", "group:wall"},
 		inventory_image = fence_texture,
@@ -349,24 +360,28 @@ function default.register_fence_rail(name, def)
 		drawtype = "nodebox",
 		node_box = {
 			type = "connected",
-			fixed = {
-				{-1/16,  3/16, -1/16, 1/16,  5/16, 1/16},
-				{-1/16, -3/16, -1/16, 1/16, -5/16, 1/16}
-			},
+			fixed = {{-1/16,  3/16, -1/16, 1/16,  5/16, 1/16},
+				 {-1/16, -3/16, -1/16, 1/16, -5/16, 1/16}},
 			-- connect_top =
 			-- connect_bottom =
-			connect_front = {
-				{-1/16,  3/16, -1/2, 1/16,  5/16, -1/16},
-				{-1/16, -5/16, -1/2, 1/16, -3/16, -1/16}},
-			connect_left = {
-				{-1/2,  3/16, -1/16, -1/16,  5/16, 1/16},
-				{-1/2, -5/16, -1/16, -1/16, -3/16, 1/16}},
-			connect_back = {
-				{-1/16,  3/16, 1/16, 1/16,  5/16, 1/2},
-				{-1/16, -5/16, 1/16, 1/16, -3/16, 1/2}},
-			connect_right = {
-				{1/16,  3/16, -1/16, 1/2,  5/16, 1/16},
-				{1/16, -5/16, -1/16, 1/2, -3/16, 1/16}},
+			connect_front = {{-1/16,  3/16, -1/2,   1/16,  5/16, -1/16},
+				         {-1/16, -5/16, -1/2,   1/16, -3/16, -1/16}},
+			connect_left =  {{-1/2,   3/16, -1/16, -1/16,  5/16,  1/16},
+				         {-1/2,  -5/16, -1/16, -1/16, -3/16,  1/16}},
+			connect_back =  {{-1/16,  3/16,  1/16,  1/16,  5/16,  1/2 },
+				         {-1/16, -5/16,  1/16,  1/16, -3/16,  1/2 }},
+			connect_right = {{ 1/16,  3/16, -1/16,  1/2,   5/16,  1/16},
+		                         { 1/16, -5/16, -1/16,  1/2,  -3/16,  1/16}}
+		},
+		collision_box = {
+			type = "connected",
+			fixed = {-1/8, -1/2, -1/8, 1/8, 1/2 + fence_collision_extra, 1/8},
+			-- connect_top =
+			-- connect_bottom =
+			connect_front = {-1/8, -1/2, -1/2,  1/8, 1/2 + fence_collision_extra, -1/8},
+			connect_left =  {-1/2, -1/2, -1/8, -1/8, 1/2 + fence_collision_extra,  1/8},
+			connect_back =  {-1/8, -1/2,  1/8,  1/8, 1/2 + fence_collision_extra,  1/2},
+			connect_right = { 1/8, -1/2, -1/8,  1/2, 1/2 + fence_collision_extra,  1/8}
 		},
 		connects_to = {"group:fence", "group:wall"},
 		inventory_image = fence_rail_texture,
diff --git a/mods/doors/init.lua b/mods/doors/init.lua
index ed686213..99b9e07e 100644
--- a/mods/doors/init.lua
+++ b/mods/doors/init.lua
@@ -725,6 +725,7 @@ minetest.register_craft({
 
 
 ----fence gate----
+local fence_collision_extra = minetest.settings:get_bool("enable_fence_tall") and 3/8 or 0
 
 function doors.register_fencegate(name, def)
 	local fence = {
@@ -748,7 +749,7 @@ function doors.register_fencegate(name, def)
 		end,
 		selection_box = {
 			type = "fixed",
-			fixed = {-1/2, -1/2, -1/4, 1/2, 1/2, 1/4},
+			fixed = {-1/2, -1/2, -1/4, 1/2, 1/2, 1/4}
 		},
 	}
 
@@ -774,7 +775,7 @@ function doors.register_fencegate(name, def)
 	fence_closed.sound = "doors_fencegate_open"
 	fence_closed.collision_box = {
 		type = "fixed",
-		fixed = {-1/2, -1/2, -1/4, 1/2, 1/2, 1/4},
+		fixed = {-1/2, -1/2, -1/8, 1/2, 1/2 + fence_collision_extra, 1/8}
 	}
 
 	local fence_open = table.copy(fence)
@@ -784,8 +785,8 @@ function doors.register_fencegate(name, def)
 	fence_open.groups.not_in_creative_inventory = 1
 	fence_open.collision_box = {
 		type = "fixed",
-		fixed = {{-1/2, -1/2, -1/4, -3/8, 1/2, 1/4},
-			{-1/2, -3/8, -1/2, -3/8, 3/8, 0}},
+		fixed = {{-1/2, -1/2, -1/8, -3/8, 1/2 + fence_collision_extra, 1/8},
+			 {-1/2, -3/8, -1/2, -3/8, 3/8,                         0  }}
 	}
 
 	minetest.register_node(":" .. name .. "_closed", fence_closed)
diff --git a/mods/walls/init.lua b/mods/walls/init.lua
index c267eba5..b2a163fc 100644
--- a/mods/walls/init.lua
+++ b/mods/walls/init.lua
@@ -2,10 +2,11 @@
 
 walls = {}
 
+local fence_collision_extra = minetest.settings:get_bool("enable_fence_tall") and 3/8 or 0
+
 -- Load support for MT game translation.
 local S = minetest.get_translator("walls")
 
-
 walls.register = function(wall_name, wall_desc, wall_texture_table, wall_mat, wall_sounds)
 	--make wall_texture_table paramenter backwards compatible for mods passing single texture
 	if type(wall_texture_table) ~= "table" then
@@ -17,12 +18,22 @@ walls.register = function(wall_name, wall_desc, wall_texture_table, wall_mat, wa
 		drawtype = "nodebox",
 		node_box = {
 			type = "connected",
-			fixed = {{-1/4, -1/2, -1/4, 1/4, 1/2, 1/4}},
+			fixed = {-1/4, -1/2, -1/4, 1/4, 1/2, 1/4},
 			-- connect_bottom =
-			connect_front = {{-3/16, -1/2, -1/2,  3/16, 3/8, -1/4}},
-			connect_left = {{-1/2, -1/2, -3/16, -1/4, 3/8,  3/16}},
-			connect_back = {{-3/16, -1/2,  1/4,  3/16, 3/8,  1/2}},
-			connect_right = {{ 1/4, -1/2, -3/16,  1/2, 3/8,  3/16}},
+			connect_front = {-3/16, -1/2, -1/2,  3/16, 3/8, -1/4},
+			connect_left = {-1/2, -1/2, -3/16, -1/4, 3/8,  3/16},
+			connect_back = {-3/16, -1/2,  1/4,  3/16, 3/8,  1/2},
+			connect_right = { 1/4, -1/2, -3/16,  1/2, 3/8,  3/16},
+		},
+		collision_box = {
+			type = "connected",
+			fixed = {-1/4, -1/2, -1/4, 1/4, 1/2 + fence_collision_extra, 1/4},
+			-- connect_top =
+			-- connect_bottom =
+			connect_front = {-1/4,-1/2,-1/2,1/4,1/2 + fence_collision_extra,-1/4},
+			connect_left = {-1/2,-1/2,-1/4,-1/4,1/2 + fence_collision_extra,1/4},
+			connect_back = {-1/4,-1/2,1/4,1/4,1/2 + fence_collision_extra,1/2},
+			connect_right = {1/4,-1/2,-1/4,1/2,1/2 + fence_collision_extra,1/4},
 		},
 		connects_to = { "group:wall", "group:stone", "group:fence" },
 		paramtype = "light",
diff --git a/settingtypes.txt b/settingtypes.txt
index 6e3f4ab4..a0d5fead 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -32,6 +32,9 @@ enable_bed_respawn (Respawn at bed) bool true
 #    in beds.
 enable_bed_night_skip (Skip night when sleeping) bool true
 
+#    If enabled, fences and walls cannot be jumped over.
+enable_fence_tall (Tall fences and walls) bool false
+
 #    When TNT explodes, it destroys nearby nodes and damages nearby players.
 #    This setting is disabled by default on servers.
 enable_tnt (TNT) bool true