diff --git a/data/language/en-GB.txt b/data/language/en-GB.txt
index a808a5598e..b82182689f 100644
--- a/data/language/en-GB.txt
+++ b/data/language/en-GB.txt
@@ -340,7 +340,6 @@ STR_0950    :Load Game
 STR_0951    :Quit Game
 STR_0952    :Quit Game
 STR_0953    :Load Landscape
-STR_0954    :
 STR_0955    :Select seat rotation angle for this track section
 STR_0956    :-180°
 STR_0957    :-135°
@@ -3618,6 +3617,7 @@ STR_6510    :Zero G Roll (left)
 STR_6511    :Zero G Roll (right)
 STR_6512    :Large Zero G Roll (left)
 STR_6513    :Large Zero G Roll (right)
+STR_6514    :Invalid height!
 
 #############
 # Scenarios #
diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 9bcd94cf3a..37281079b1 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -30,6 +30,7 @@
 - Fix: [#17600] Notifications are not properly cleared when loading a park.
 - Fix: [#17605] Crash when opening parks which have had objects removed externally.
 - Fix: [#17639] When building upside down, the special elements list contains many items twice (original bug).
+- Fix: [#17703] (undefined string) when building on invalid height.
 
 0.4.1 (2022-07-04)
 ------------------------------------------------------------------------
diff --git a/src/openrct2/actions/MazePlaceTrackAction.cpp b/src/openrct2/actions/MazePlaceTrackAction.cpp
index 0f318a7a1c..9c701a6bb9 100644
--- a/src/openrct2/actions/MazePlaceTrackAction.cpp
+++ b/src/openrct2/actions/MazePlaceTrackAction.cpp
@@ -45,7 +45,7 @@ GameActions::Result MazePlaceTrackAction::Query() const
     if ((_loc.z & 0xF) != 0)
     {
         res.Error = GameActions::Status::Unknown;
-        res.ErrorMessage = STR_CONSTRUCTION_ERR_UNKNOWN;
+        res.ErrorMessage = STR_INVALID_HEIGHT;
         return res;
     }
 
diff --git a/src/openrct2/actions/MazeSetTrackAction.cpp b/src/openrct2/actions/MazeSetTrackAction.cpp
index 88e0631757..d9b1f96a2f 100644
--- a/src/openrct2/actions/MazeSetTrackAction.cpp
+++ b/src/openrct2/actions/MazeSetTrackAction.cpp
@@ -56,7 +56,7 @@ GameActions::Result MazeSetTrackAction::Query() const
     if ((_loc.z & 0xF) != 0 && _mode == GC_SET_MAZE_TRACK_BUILD)
     {
         res.Error = GameActions::Status::Unknown;
-        res.ErrorMessage = STR_CONSTRUCTION_ERR_UNKNOWN;
+        res.ErrorMessage = STR_INVALID_HEIGHT;
         return res;
     }
 
diff --git a/src/openrct2/actions/TrackPlaceAction.cpp b/src/openrct2/actions/TrackPlaceAction.cpp
index a39a80a00e..4281fc811f 100644
--- a/src/openrct2/actions/TrackPlaceAction.cpp
+++ b/src/openrct2/actions/TrackPlaceAction.cpp
@@ -194,8 +194,7 @@ GameActions::Result TrackPlaceAction::Query() const
             if ((_origin.z & 0x0F) != 8)
             {
                 return GameActions::Result(
-                    GameActions::Status::InvalidParameters, STR_RIDE_CONSTRUCTION_CANT_CONSTRUCT_THIS_HERE,
-                    STR_CONSTRUCTION_ERR_UNKNOWN);
+                    GameActions::Status::InvalidParameters, STR_RIDE_CONSTRUCTION_CANT_CONSTRUCT_THIS_HERE, STR_INVALID_HEIGHT);
             }
         }
         else
@@ -203,8 +202,7 @@ GameActions::Result TrackPlaceAction::Query() const
             if ((_origin.z & 0x0F) != 0)
             {
                 return GameActions::Result(
-                    GameActions::Status::InvalidParameters, STR_RIDE_CONSTRUCTION_CANT_CONSTRUCT_THIS_HERE,
-                    STR_CONSTRUCTION_ERR_UNKNOWN);
+                    GameActions::Status::InvalidParameters, STR_RIDE_CONSTRUCTION_CANT_CONSTRUCT_THIS_HERE, STR_INVALID_HEIGHT);
             }
         }
     }
diff --git a/src/openrct2/localisation/StringIds.h b/src/openrct2/localisation/StringIds.h
index a5d20cf53c..28461084de 100644
--- a/src/openrct2/localisation/StringIds.h
+++ b/src/openrct2/localisation/StringIds.h
@@ -372,7 +372,7 @@ enum : uint16_t
     STR_QUIT_GAME_PROMPT_TITLE = 951,
     STR_QUIT_GAME_2_PROMPT_TITLE = 952,
     STR_LOAD_LANDSCAPE_PROMPT_TITLE = 953,
-    STR_CONSTRUCTION_ERR_UNKNOWN = 954,
+
     STR_RIDE_CONSTRUCTION_SELECT_SEAT_ROTATION_ANGLE_TIP = 955,
     STR_RIDE_CONSTRUCTION_SEAT_ROTATION_ANGLE_NEG_180 = 956,
     STR_RIDE_CONSTRUCTION_SEAT_ROTATION_ANGLE_NEG_135 = 957,
@@ -3897,6 +3897,8 @@ enum : uint16_t
     STR_LARGE_ZERO_G_ROLL_LEFT = 6512,
     STR_LARGE_ZERO_G_ROLL_RIGHT = 6513,
 
+    STR_INVALID_HEIGHT = 6514,
+
     // Have to include resource strings (from scenarios and objects) for the time being now that language is partially working
     /* MAX_STR_COUNT = 32768 */ // MAX_STR_COUNT - upper limit for number of strings, not the current count strings
 };