diff --git a/src/naveditor/Editor_TileMesh.cpp b/src/naveditor/Editor_TileMesh.cpp
index dd928e9e..e85f801b 100644
--- a/src/naveditor/Editor_TileMesh.cpp
+++ b/src/naveditor/Editor_TileMesh.cpp
@@ -447,7 +447,9 @@ bool Editor_TileMesh::handleBuild()
 	params.polyGroupCount = 0;
 	params.traversalTableSize = 0;
 	params.traversalTableCount = NavMesh_GetTraversalTableCountForNavMeshType(m_selectedNavMeshType);
+#if DT_NAVMESH_SET_VERSION >= 8
 	params.magicDataCount = 0;
+#endif
 	
 	dtStatus status;
 	
diff --git a/src/thirdparty/recast/DebugUtils/Source/DetourDebugDraw.cpp b/src/thirdparty/recast/DebugUtils/Source/DetourDebugDraw.cpp
index 83d81065..d5d6a10c 100644
--- a/src/thirdparty/recast/DebugUtils/Source/DetourDebugDraw.cpp
+++ b/src/thirdparty/recast/DebugUtils/Source/DetourDebugDraw.cpp
@@ -202,6 +202,10 @@ static void drawTileCells(duDebugDraw* dd, const dtMeshTile* tile, const float*
 		const dtCell& probe = tile->cells[i];
 		duDebugDrawCross(dd, probe.pos[0], probe.pos[1], probe.pos[2], 25.f, duRGBA(255,0,0,255), 2, offset);
 	}
+#else
+	rdIgnoreUnused(dd);
+	rdIgnoreUnused(tile);
+	rdIgnoreUnused(offset);
 #endif
 }
 
diff --git a/src/thirdparty/recast/Detour/Include/DetourNavMesh.h b/src/thirdparty/recast/Detour/Include/DetourNavMesh.h
index 88b06271..ad4c332a 100644
--- a/src/thirdparty/recast/Detour/Include/DetourNavMesh.h
+++ b/src/thirdparty/recast/Detour/Include/DetourNavMesh.h
@@ -24,7 +24,7 @@
 
 // NOTE: these are defines as we need to be able to switch between code that is
 // dedicated for each version, during compile time.
-#define DT_NAVMESH_SET_VERSION 9 // Public versions: 5,7,8,9.
+#define DT_NAVMESH_SET_VERSION 8 // Public versions: 5,7,8,9.
 #define DT_NAVMESH_SET_MAGIC ('M'<<24 | 'S'<<16 | 'E'<<8 | 'T')
 int dtGetNavMeshVersionForSet(const int setVersion);
 
@@ -395,7 +395,9 @@ struct dtMeshHeader
 	int bvNodeCount;			///< The number of bounding volume nodes. (Zero if bounding volumes are disabled.)
 	int offMeshConCount;		///< The number of off-mesh connections.
 	int offMeshBase;			///< The index of the first polygon which is an off-mesh connection.
+#if DT_NAVMESH_SET_VERSION >= 8
 	int maxCellCount;			///< The number of allocated cells.
+#endif
 
 	float walkableHeight;		///< The height of the agents using the tile.
 	float walkableRadius;		///< The radius of the agents using the tile.
diff --git a/src/thirdparty/recast/Detour/Source/DetourNavMesh.cpp b/src/thirdparty/recast/Detour/Source/DetourNavMesh.cpp
index c120caa2..f071edfc 100644
--- a/src/thirdparty/recast/Detour/Source/DetourNavMesh.cpp
+++ b/src/thirdparty/recast/Detour/Source/DetourNavMesh.cpp
@@ -315,7 +315,9 @@ dtStatus dtNavMesh::init(unsigned char* data, const int dataSize, const int tabl
 	params.polyGroupCount = 0;
 	params.traversalTableSize = 0;
 	params.traversalTableCount = tableCount;
+#if DT_NAVMESH_SET_VERSION >= 7
 	params.magicDataCount = 0;
+#endif
 	
 	dtStatus status = init(&params);
 	if (dtStatusFailed(status))