diff --git a/src/core/export.jl b/src/core/export.jl
index cf9cff96f..f9b17d6dc 100644
--- a/src/core/export.jl
+++ b/src/core/export.jl
@@ -1,9 +1,9 @@
-# ThreePhasePowerModels exports everything except internal symbols, which are defined as
+# PowerModelsDistribution exports everything except internal symbols, which are defined as
 # those whose name starts with an underscore. If you don't want all of these
-# symbols in your environment, then use `import ThreePhasePowerModels` instead of
-# `using ThreePhasePowerModels`.
+# symbols in your environment, then use `import PowerModelsDistribution` instead of
+# `using PowerModelsDistribution`.
 
-# Do not add ThreePhasePowerModels-defined symbols to this exclude list. Instead, rename
+# Do not add PowerModelsDistribution-defined symbols to this exclude list. Instead, rename
 # them with an underscore.
 
 const _EXCLUDE_SYMBOLS = [Symbol(@__MODULE__), :eval, :include]
@@ -20,9 +20,9 @@ for sym in names(@__MODULE__, all=true)
 end
 
 # the follow items are also exported for user-friendlyness when calling
-# `using ThreePhasePowerModels`
+# `using PowerModelsDistribution`
 
-# so that users do not need to import JuMP to use a solver with ThreePhasePowerModels
+# so that users do not need to import JuMP to use a solver with PowerModelsDistribution
 import JuMP: with_optimizer
 export with_optimizer
 
diff --git a/src/io/opendss.jl b/src/io/opendss.jl
index 3132f0518..74e1d2f63 100644
--- a/src/io/opendss.jl
+++ b/src/io/opendss.jl
@@ -1134,7 +1134,7 @@ function _decompose_transformers!(pmd_data; import_all::Bool=false)
             # 2-WINDING TRANSFORMER
             trans_dict = Dict{String, Any}()
             trans_dict["name"] = "tr$(tr_id)_w$(w)"
-            trans_dict["source_id"] = "$(trans["source_id"])"
+            trans_dict["source_id"] = "$(trans["source_id"])_$(w)"
             trans_dict["active_phases"] = [1, 2, 3]
             _push_dict_ret_key!(pmd_data["trans"], trans_dict)
             # connection settings
diff --git a/test/opendss.jl b/test/opendss.jl
index ac3bea113..b430840bc 100644
--- a/test/opendss.jl
+++ b/test/opendss.jl
@@ -249,7 +249,7 @@
 
             @test pmd["branch"]["1"]["source_id"] == "line.l1" && length(pmd["branch"]["1"]["active_phases"]) == 3
             # transformer is no longer a branch
-            @test pmd["trans"]["1"]["source_id"] == "transformer.t4"  # winding indicated by _1
+            @test pmd["trans"]["1"]["source_id"] == "transformer.t4_1"  # winding indicated by _1
             # updated index, reactors shifted
             @test pmd["branch"]["10"]["source_id"] == "reactor.reactor1" && length(pmd["branch"]["10"]["active_phases"]) == 3