diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index bbd9e57ac..190ac6884 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -101,10 +101,10 @@ static const char *modified_reason_strings[] = {
 */
 
 MapBlock::MapBlock(v3s16 pos, IGameDef *gamedef):
-		m_is_mono_block(true),
 		m_pos(pos),
 		m_pos_relative(pos * MAP_BLOCKSIZE),
-		m_gamedef(gamedef)
+		m_gamedef(gamedef),
+		m_is_mono_block(true)
 {
 	reallocate(1, MapNode(CONTENT_IGNORE));
 }
diff --git a/src/mapblock.h b/src/mapblock.h
index c8026abb4..62f796e16 100644
--- a/src/mapblock.h
+++ b/src/mapblock.h
@@ -464,7 +464,6 @@ public:
 private:
 	// see isOrphan()
 	bool m_orphan = false;
-	bool m_is_mono_block;
 
 	// Position in blocks on parent
 	v3s16 m_pos;
@@ -499,6 +498,7 @@ private:
 	*/
 	float m_usage_timer = 0;
 
+	bool m_is_mono_block;
 public:
 	//// ABM optimizations ////
 	// True if we never want to cache content types for this block