diff --git a/extern/recastnavigation/Detour/Include/DetourTileNavMesh.h b/extern/recastnavigation/Detour/Include/DetourTileNavMesh.h
index 305c61e5eb5..50ccdd118e8 100644
--- a/extern/recastnavigation/Detour/Include/DetourTileNavMesh.h
+++ b/extern/recastnavigation/Detour/Include/DetourTileNavMesh.h
@@ -36,7 +36,7 @@ static const int DT_TILE_VERTS_PER_POLYGON = 6;
 static const int DT_MAX_TILES = 1 << DT_TILE_REF_TILE_BITS;
 static const int DT_MAX_POLYGONS = 1 << DT_TILE_REF_POLY_BITS;
 
-static const int DT_TILE_NAVMESH_MAGIC = (('N'<<24) | ('A'<<16) | ('V'<<8) | 'M');
+static const int DT_TILE_NAVMESH_MAGIC = (('N'<<24) | ('A'<<16) | ('V'<<8) | 'T');
 static const int DT_TILE_NAVMESH_VERSION = 2;
 
 // Structure holding the navigation polygon data.