diff --git a/packages/muelu/doc/UsersGuide/masterList.xml b/packages/muelu/doc/UsersGuide/masterList.xml
index 389ffc1c6b73..04e732c13e7e 100644
--- a/packages/muelu/doc/UsersGuide/masterList.xml
+++ b/packages/muelu/doc/UsersGuide/masterList.xml
@@ -637,7 +637,7 @@
     <parameter>
       <name>aggregation: deterministic</name>
       <type>bool</type>
-      <default>false</default>
+      <default>true</default>
       <description>Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).</description>
       <comment-ML>parameter not existing in ML</comment-ML>
     </parameter>
diff --git a/packages/muelu/doc/UsersGuide/options_aggregation.tex b/packages/muelu/doc/UsersGuide/options_aggregation.tex
index cd41f9039b16..42de1fa8d69b 100644
--- a/packages/muelu/doc/UsersGuide/options_aggregation.tex
+++ b/packages/muelu/doc/UsersGuide/options_aggregation.tex
@@ -40,7 +40,7 @@
           
 \cbb{aggregation: greedy Dirichlet}{bool}{false}{Force the aggregate to be Dirichlet if any DOFs in the aggregate are Dirichlet (default is aggregates are Dirichlet only if all DOFs in the aggregate are Dirichlet).}
           
-\cbb{aggregation: deterministic}{bool}{false}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
+\cbb{aggregation: deterministic}{bool}{true}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
           
 \cbb{aggregation: coloring algorithm}{string}{serial}{Choice of distance 2 independent set or coloring algorithm used by Uncoupled Aggregation, when using kokkos refactored aggregation. See Table \ref{t:coloring_algs} for more information.}
           
@@ -71,4 +71,4 @@
 \cbb{aggregation: number of spatial dimensions}{int}{3}{The number of spatial dimensions in the problem.}
           
 \cbb{aggregation: coarsening order}{int}{0}{The interpolation order used while constructing these aggregates, this value will be passed to the prolongator factory. There, possible values are 0 for piece-wise constant and 1 for piece-wise linear interpolation to transfer values from coarse points to fine points. }
-          
\ No newline at end of file
+          
diff --git a/packages/muelu/doc/UsersGuide/paramlist.tex b/packages/muelu/doc/UsersGuide/paramlist.tex
index c6b72a876af8..b5c42d1cec0b 100644
--- a/packages/muelu/doc/UsersGuide/paramlist.tex
+++ b/packages/muelu/doc/UsersGuide/paramlist.tex
@@ -93,7 +93,7 @@
           
 \cbb{aggregation: greedy Dirichlet}{bool}{false}{Force the aggregate to be Dirichlet if any DOFs in the aggregate are Dirichlet (default is aggregates are Dirichlet only if all DOFs in the aggregate are Dirichlet).}
           
-\cbb{aggregation: deterministic}{bool}{false}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
+\cbb{aggregation: deterministic}{bool}{true}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
           
 \cbb{aggregation: coloring algorithm}{string}{serial}{Choice of distance 2 independent set or coloring algorithm used by Uncoupled Aggregation, when using kokkos refactored aggregation. See Table \ref{t:coloring_algs} for more information.}
           
@@ -262,4 +262,4 @@
 \cbb{refmaxwell: subsolves on subcommunicators}{bool}{false}{Redistribute the two subsolves to disjoint sub-communicators (so that the additive solve can occur in parallel).}
           
 \cbb{refmaxwell: enable reuse}{bool}{false}{Prepare for solver reuse.}
-          
\ No newline at end of file
+          
diff --git a/packages/muelu/doc/UsersGuide/paramlist_hidden.tex b/packages/muelu/doc/UsersGuide/paramlist_hidden.tex
index df1c663c0e74..1180f792b67d 100644
--- a/packages/muelu/doc/UsersGuide/paramlist_hidden.tex
+++ b/packages/muelu/doc/UsersGuide/paramlist_hidden.tex
@@ -124,7 +124,7 @@
         
 \cbb{aggregation: greedy Dirichlet}{bool}{false}{Force the aggregate to be Dirichlet if any DOFs in the aggregate are Dirichlet (default is aggregates are Dirichlet only if all DOFs in the aggregate are Dirichlet).}
         
-\cbb{aggregation: deterministic}{bool}{false}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
+\cbb{aggregation: deterministic}{bool}{true}{Boolean indicating whether or not aggregation will be run deterministically in the kokkos refactored path (only used in uncoupled aggregation).}
         
 \cbb{aggregation: coloring algorithm}{string}{serial}{Choice of distance 2 independent set or coloring algorithm used by Uncoupled Aggregation, when using kokkos refactored aggregation. See Table \ref{t:coloring_algs} for more information.}
         
@@ -466,4 +466,4 @@
 \cbb{refmaxwell: skip first (1,1) level}{bool}{true}{Skip the first level of the (1,1) hierarchy.}
         
 \cbb{refmaxwell: normalize nullspace}{bool}{false}{Normalize the nullspace.}
-        
\ No newline at end of file
+        
diff --git a/packages/muelu/src/MueCentral/MueLu_MasterList.cpp b/packages/muelu/src/MueCentral/MueLu_MasterList.cpp
index 3f38fa1c8984..26f1516d6f0e 100644
--- a/packages/muelu/src/MueCentral/MueLu_MasterList.cpp
+++ b/packages/muelu/src/MueCentral/MueLu_MasterList.cpp
@@ -235,7 +235,7 @@ namespace MueLu {
   "<Parameter name=\"aggregation: max selected neighbors\" type=\"int\" value=\"0\"/>"
   "<Parameter name=\"aggregation: Dirichlet threshold\" type=\"double\" value=\"0.0\"/>"
   "<Parameter name=\"aggregation: greedy Dirichlet\" type=\"bool\" value=\"false\"/>"
-  "<Parameter name=\"aggregation: deterministic\" type=\"bool\" value=\"false\"/>"
+  "<Parameter name=\"aggregation: deterministic\" type=\"bool\" value=\"true\"/>"
   "<Parameter name=\"aggregation: coloring algorithm\" type=\"string\" value=\"serial\"/>"
   "<Parameter name=\"aggregation: coloring: use color graph\" type=\"bool\" value=\"false\"/>"
   "<Parameter name=\"aggregation: coloring: localize color graph\" type=\"bool\" value=\"true\"/>"