diff --git a/src/foldssum.jl b/src/foldssum.jl
index e3cf4a8..4e1a055 100644
--- a/src/foldssum.jl
+++ b/src/foldssum.jl
@@ -70,7 +70,7 @@ function product(sum::FoldsSum{<:Any,<:DistributedEx}, v::ITensor)
 end
 
 function product(callback, sum::FoldsSum, v::ITensor)
-  return Folds.sum(terms(sum), executor(sum)) begin term
+  return Folds.sum(terms(sum), executor(sum)) do term
     res = term(v)
     callback()
     return res
@@ -86,7 +86,7 @@ function position!(sum::FoldsSum{<:Any,<:DistributedEx}, v::MPS, pos::Int)
 end
 
 function position!(callback, sum::FoldsSum, v::MPS, pos::Int)
-  new_terms = Folds.map(term -> position!(term, v, pos), terms(sum), executor(sum)) begin term
+  new_terms = Folds.map(terms(sum), executor(sum)) do term
     res = position!(term, v, pos)
     callback()
     return res
@@ -99,7 +99,7 @@ function noiseterm(sum::FoldsSum, v::ITensor, dir::String)
 end
 
 function noiseterm(callback, sum::FoldsSum, v::ITensor, dir::String)
-  return Folds.sum(terms(sum), executor(sum)) begin term
+  return Folds.sum(terms(sum), executor(sum)) do term
     res = noiseterm(term, v, dir)
     callback()
     return res
diff --git a/src/force_gc.jl b/src/force_gc.jl
index a6fb0d5..b1019a5 100644
--- a/src/force_gc.jl
+++ b/src/force_gc.jl
@@ -10,7 +10,7 @@ end
 # https://discourse.julialang.org/t/from-multithreading-to-distributed/101984/6
 function force_gc(gb_threshold::Real=get_gc_gb_threshold())
   if Sys.free_memory() < gb_threshold * 2^30
-     GC.gc()
+    GC.gc()
   end
   return nothing
 end
diff --git a/src/mpisumterm.jl b/src/mpisumterm.jl
index 70d2741..5a60dad 100644
--- a/src/mpisumterm.jl
+++ b/src/mpisumterm.jl
@@ -9,7 +9,7 @@ set_term(sumterm::MPISumTerm, term) = (@set sumterm.term = term)
 set_comm(sumterm::MPISumTerm, comm) = (@set sumterm.comm = comm)
 
 MPISumTerm(mpo::MPO, comm::MPI.Comm) = MPISumTerm(ProjMPO(mpo), comm)
-MPISumTerm(mpos::Vector{MPO},comm::MPI.Comm) = MPISumTerm(ProjMPOSum(mpos),comm)
+MPISumTerm(mpos::Vector{MPO}, comm::MPI.Comm) = MPISumTerm(ProjMPOSum(mpos), comm)
 
 nsite(sumterm::MPISumTerm) = nsite(term(sumterm))