diff --git a/SU2_PY/FSI_tools/FSIInterface.py b/SU2_PY/FSI_tools/FSIInterface.py
index 35c91af736c..d86c82a95b6 100644
--- a/SU2_PY/FSI_tools/FSIInterface.py
+++ b/SU2_PY/FSI_tools/FSIInterface.py
@@ -1239,8 +1239,8 @@ def interpolateSolidPositionOnFluidMesh(self, FSI_config):
           if myid == self.rootProcess:
             for iProc in self.fluidInterfaceProcessors:
               sendBuff = {}
-              for key in self.FluidHaloNodeList[iProc].keys():                  # The key is the SU2 global
-                globalIndex = self.fluidIndexing[key]                           # This is the interface global, not the SU2 global
+              for key in self.FluidHaloNodeList[iProc].keys():                  # The keys are the SU2 global IDs of the interface nodes
+                globalIndex = self.fluidIndexing[key]                           # These are the interface global IDs, not the SU2 global IDs
                 DispX = self.fluidInterface_array_DispX_recon[globalIndex]
                 DispY = self.fluidInterface_array_DispY_recon[globalIndex]
                 DispZ = self.fluidInterface_array_DispZ_recon[globalIndex]
diff --git a/SU2_PY/SU2_Nastran/pysu2_nastran.py b/SU2_PY/SU2_Nastran/pysu2_nastran.py
index 43f4e13e9f7..85e8ce81362 100644
--- a/SU2_PY/SU2_Nastran/pysu2_nastran.py
+++ b/SU2_PY/SU2_Nastran/pysu2_nastran.py
@@ -855,7 +855,8 @@ def __temporalIteration(self,time):
       self.a += (1-self.alpha_f)/(1-self.alpha_m)*self.qddot
     else:
       if self.ImposedMotionToSet:
-        if self.Config["RESTART_SOL"] == "NO":                                   # If yes we already set it in the __setRestart function
+        if self.Config["RESTART_SOL"] == "NO":
+          # If yes we already set it in the __setRestart function
           self.timeStartCoupling = time
         iImposedFunc = 0
         for imode in self.Config["IMPOSED_MODES"].keys():
@@ -1004,8 +1005,9 @@ def getNumberOfSolidInterfaceNodes(self, markerID):
 
     return len(self.markers[markerID])
 
-  def getVertexGlobalIndex(self, markerID, iVertex):   # TODO This solver is serial, thus global=local
+  def getVertexGlobalIndex(self, markerID, iVertex):
 
+    # This solver is serial, thus global=local
     return self.markers[markerID][iVertex]
 
   def getInterfaceNodePosInit(self, markerID, iVertex):
@@ -1035,6 +1037,7 @@ def getInterfaceNodeVelNm1(self, markerID, iVertex):
 
   def IsAHaloNode(self, markerID, iVertex):
 
+    # There are no halo nodes in this solver as it is serial
     iPoint = self.markers[markerID][iVertex]
-    halo = False  # TODO when in parallel we will need to define this
+    halo = False
     return halo