diff --git a/src/mapgen/mapgen_singlenode.cpp b/src/mapgen/mapgen_singlenode.cpp
index 1a6cba6b0..6585ea7a9 100644
--- a/src/mapgen/mapgen_singlenode.cpp
+++ b/src/mapgen/mapgen_singlenode.cpp
@@ -74,8 +74,8 @@ void MapgenSinglenode::makeChunk(BlockMakeData *data)
 		}
 	}
 
-	// Add top and bottom side of water to transforming_liquid queue
-	updateLiquid(&data->transforming_liquid, node_min, node_max);
+	if (ndef->get(n_node).isLiquid())
+		updateLiquid(&data->transforming_liquid, node_min, node_max);
 
 	// Set lighting
 	if ((flags & MG_LIGHT) && set_light == LIGHT_SUN)