diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19efaf816eef02960280cac543d89192090d859b..c3b5c31b8317de6f1778d39c21048ea3a467afa1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -58,11 +58,12 @@ v4.4.0
 v4.3.4
 ------
 **Library:**
-- Fix performance issue with `v_ExtractDataToCoeffs` for post-processing of large
-  simulations (!672)
+- Fix performance issue with `v_ExtractDataToCoeffs` for post-processing of
+  large simulations (!672)
 - Added additional assertions to ensure homogeneous simulations have an even
   number of planes per process (!666)
 - Fix compilation with NEKTAR_USE_MESHGEN option
+- Fix IterativeFull solver in parallel (!685)
 
 v4.3.3
 ------
diff --git a/library/MultiRegions/GlobalLinSysIterativeFull.cpp b/library/MultiRegions/GlobalLinSysIterativeFull.cpp
index 84d2db206d9f816f9dbb4ccb213674645db7032c..75035f52681a0c5fb3b1d035c0c10dcc61118350 100644
--- a/library/MultiRegions/GlobalLinSysIterativeFull.cpp
+++ b/library/MultiRegions/GlobalLinSysIterativeFull.cpp
@@ -136,7 +136,8 @@ namespace Nektar
             int nGlobDofs = pLocToGloMap->GetNumGlobalCoeffs();
             int nDirTotal = nDirDofs;
             
-            expList->GetComm()->AllReduce(nDirTotal, LibUtilities::ReduceSum);
+            expList->GetComm()->GetRowComm()
+                   ->AllReduce(nDirTotal, LibUtilities::ReduceSum);
             
             Array<OneD, NekDouble> tmp(nGlobDofs), tmp2;