diff --git a/src/junction_trees/elimination_trees.jl b/src/junction_trees/elimination_trees.jl
index 1a87c9a..0ef95dd 100644
--- a/src/junction_trees/elimination_trees.jl
+++ b/src/junction_trees/elimination_trees.jl
@@ -1,7 +1,7 @@
 # An ordered graph (G, σ) equipped with the elimination tree T of its elimination graph.
 # Nodes i in T correspond to vertices σ(i) in G.
 struct EliminationTree{T <: Union{Tree, PostorderTree}}
-    tree::T              # elimination tree
+    tree::T             # elimination tree
     graph::OrderedGraph # ordered graph
 end
 
diff --git a/src/junction_trees/supernode_trees.jl b/src/junction_trees/supernode_trees.jl
index 24dbc43..f47d867 100644
--- a/src/junction_trees/supernode_trees.jl
+++ b/src/junction_trees/supernode_trees.jl
@@ -1,7 +1,7 @@
 # An ordered graph (G, σ) equipped with a supernodal elimination tree T.
 struct SupernodeTree
     tree::PostorderTree         # supernodal elimination tree
-    graph::OrderedGraph        # ordered graph
+    graph::OrderedGraph         # ordered graph
     representative::Vector{Int} # representative vertex
     cardinality::Vector{Int}    # supernode cardinality
     ancestor::Vector{Int}       # first ancestor