diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
index 678752ff7..ea5935c8f 100644
--- a/.github/workflows/linux-ci.yml
+++ b/.github/workflows/linux-ci.yml
@@ -54,6 +54,7 @@ jobs:
           ADD_BUILD_ARGS=()
           ADD_BUILD_ARGS+=( --tests main --enable-relocatable )
           ADD_BUILD_ARGS+=( --verbosity 2 )
+          [[ ${{ matrix.os }} == ubuntu* ]] && ADD_ARGS+=( --with-nauty-incdir=/usr/include/x86_64-linux-gnu/nauty --with-nauty-lib="-L/usr/lib/ -lnauty" )
           [[ ${{ matrix.build_static }} == "true" ]] && \
           ADD_BUILD_ARGS+=( --static --with-lapack='-llapack -lblas -lgfortran -lquadmath -lm' )
           bash coinbrew/coinbrew fetch ${{ github.event.repository.name }} --skip-update \
diff --git a/Cbc/src/CbcModel.cpp b/Cbc/src/CbcModel.cpp
index 1a181e700..e49c8699a 100644
--- a/Cbc/src/CbcModel.cpp
+++ b/Cbc/src/CbcModel.cpp
@@ -5870,10 +5870,8 @@ CbcModel::CbcModel()
   , lastHeuristic_(NULL)
   , fastNodeDepth_(-1)
   , eventHandler_(NULL)
-#ifdef COIN_HAS_NTY
   , symmetryInfo_(NULL)
   , rootSymmetryInfo_(NULL)
-#endif
   , numberObjects_(0)
   , object_(NULL)
   , ownObjects_(true)
@@ -6043,10 +6041,8 @@ CbcModel::CbcModel(const OsiSolverInterface &rhs)
   , lastHeuristic_(NULL)
   , fastNodeDepth_(-1)
   , eventHandler_(NULL)
-#ifdef COIN_HAS_NTY
   , symmetryInfo_(NULL)
   , rootSymmetryInfo_(NULL)
-#endif
   , numberObjects_(0)
   , object_(NULL)
   , ownObjects_(true)
diff --git a/Cbc/src/CbcModel.hpp b/Cbc/src/CbcModel.hpp
index ed811bc98..96e6ead6d 100644
--- a/Cbc/src/CbcModel.hpp
+++ b/Cbc/src/CbcModel.hpp
@@ -2609,7 +2609,7 @@ class CbcModel {
   {
     maximumNumberIterations_ = value;
   }
-#ifdef COIN_HAS_NTY
+
   /// Symmetry information
   inline CbcSymmetry *symmetryInfo() const
   {
@@ -2627,9 +2627,6 @@ class CbcModel {
   {
     return rootSymmetryInfo_;
   }
-  /// get rid of all
-  void zapRootSymmetry();
-#endif
   /// Set depth for fast nodes
   inline void setFastNodeDepth(int value)
   {
@@ -3115,12 +3112,10 @@ class CbcModel {
 #else
   CbcEventHandler *eventHandler_;
 #endif
-#ifdef COIN_HAS_NTY
   /// Symmetry information
   CbcSymmetry *symmetryInfo_;
   /// Root symmetry information
   CbcSymmetry *rootSymmetryInfo_;
-#endif
   /// Total number of objects
   int numberObjects_;