diff --git a/dynare++/tl/cc/int_sequence.cc b/dynare++/tl/cc/int_sequence.cc
index 4177d337d..8756a6d58 100644
--- a/dynare++/tl/cc/int_sequence.cc
+++ b/dynare++/tl/cc/int_sequence.cc
@@ -20,26 +20,6 @@ IntSequence::unfold(const Symmetry &sy) const
   return r;
 }
 
-/* This constructs an implied symmetry (implemented as |IntSequence|
-   from a more general symmetry and equivalence class (implemented as
-   |vector<int>|). For example, let the general symmetry be $y^3u^2$ and
-   the equivalence class is $\{0,4\}$ picking up first and fifth
-   variable, we calculate symmetry (at this point only |IntSequence|)
-   corresponding to the picked variables. These are $yu$. Thus the
-   constructed sequence must be $(1,1)$, meaning that we picked one $y$
-   and one $u$. */
-
-IntSequence::IntSequence(const Symmetry &sy, const std::vector<int> &se)
-  : data{new int[sy.num()]}, length{sy.num()}
-{
-  TL_RAISE_IF(sy.dimen() <= se[se.size()-1],
-              "Sequence is not reachable by symmetry in IntSequence()");
-  for (int i = 0; i < length; i++)
-    operator[](i) = 0;
-
-  for (int i : se)
-    operator[](sy.findClass(i))++;
-}
 
 /* This constructs an ordered integer sequence from the given ordered
    sequence inserting the given number to the sequence. */
diff --git a/dynare++/tl/cc/int_sequence.hh b/dynare++/tl/cc/int_sequence.hh
index 8c66afa2f..54c2b380c 100644
--- a/dynare++/tl/cc/int_sequence.hh
+++ b/dynare++/tl/cc/int_sequence.hh
@@ -88,9 +88,6 @@ public:
   {
     std::copy_n(s.data+i1, length, data);
   }
-  /* Constructor used for calculating implied symmetry from a more general
-     symmetry and one equivalence class */
-  IntSequence(const Symmetry &sy, const std::vector<int> &se);
   /* Unfolds a given integer sequence with respect to a given symmetry. If for
      example the sequence is $(a,b)$ and the symmetry is $(2,3)$, then the
      result is $(a,a,b,b,b)$. */
diff --git a/dynare++/tl/cc/symmetry.cc b/dynare++/tl/cc/symmetry.cc
index 23a7e878c..fc56b4112 100644
--- a/dynare++/tl/cc/symmetry.cc
+++ b/dynare++/tl/cc/symmetry.cc
@@ -2,6 +2,7 @@
 
 #include "symmetry.hh"
 #include "permutation.hh"
+#include "tl_exception.hh"
 
 #include <iostream>
 
@@ -21,6 +22,26 @@ Symmetry::Symmetry(const IntSequence &s)
     }
 }
 
+/* This constructs an implied symmetry from a more general symmetry and
+   equivalence class. For example, let the general symmetry be $y^3u^2$ and the
+   equivalence class is $\{0,4\}$ picking up first and fifth variable, we
+   calculate symmetry corresponding to the picked variables. These are $yu$.
+   Thus the constructed sequence must be $(1,1)$, meaning that we picked one
+   $y$ and one $u$. */
+
+Symmetry::Symmetry(const Symmetry &sy, const OrdSequence &cl)
+  : IntSequence(sy.num())
+{
+  const std::vector<int> &se = cl.getData();
+  TL_RAISE_IF(sy.dimen() <= se[se.size()-1],
+              "Sequence is not reachable by symmetry in IntSequence()");
+  for (int i = 0; i < size(); i++)
+    operator[](i) = 0;
+
+  for (int i : se)
+    operator[](sy.findClass(i))++;
+}
+
 /* Find a class of the symmetry containing a given index. */
 
 int
diff --git a/dynare++/tl/cc/symmetry.hh b/dynare++/tl/cc/symmetry.hh
index 414acc580..1670c7560 100644
--- a/dynare++/tl/cc/symmetry.hh
+++ b/dynare++/tl/cc/symmetry.hh
@@ -72,10 +72,7 @@ public:
   {
   }
   // Constructor of implied symmetry for a symmetry and an equivalence class
-  Symmetry(const Symmetry &s, const OrdSequence &cl)
-    : IntSequence(s, cl.getData())
-  {
-  }
+  Symmetry(const Symmetry &s, const OrdSequence &cl);
   /* Subsymmetry, which takes the given length of symmetry from the end (shares
      data pointer) */
   Symmetry(Symmetry &s, int len)