diff --git a/src/lib/chemistry/qc/mbptr12/transform_ijxy.cc b/src/lib/chemistry/qc/mbptr12/transform_ijxy.cc
index 2b45d3b..a25e5f9 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ijxy.cc
+++ b/src/lib/chemistry/qc/mbptr12/transform_ijxy.cc
@@ -174,7 +174,7 @@ TwoBodyMOIntsTransform_ijxy::init_acc()
 }
 
 void
-TwoBodyMOIntsTransform_ijxy::check_int_symm(double threshold) const throw (ProgrammingError)
+TwoBodyMOIntsTransform_ijxy::check_int_symm(double threshold) const /*throw (ProgrammingError)*/
 {
   Ref<R12IntsAcc> iacc = ints_acc();
   if (!iacc->is_committed())
diff --git a/src/lib/chemistry/qc/mbptr12/transform_ijxy.h b/src/lib/chemistry/qc/mbptr12/transform_ijxy.h
index 3407cb3..ecb61c6 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ijxy.h
+++ b/src/lib/chemistry/qc/mbptr12/transform_ijxy.h
@@ -70,7 +70,7 @@ public:
   /// Computes transformed integrals
   void compute();
   /// Check symmetry of transformed integrals
-  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const throw (ProgrammingError);
+  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const /*throw (ProgrammingError)*/;
 };
 
 }
diff --git a/src/lib/chemistry/qc/mbptr12/transform_ikjy.cc b/src/lib/chemistry/qc/mbptr12/transform_ikjy.cc
index ccb8d45..43c2fb6 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ikjy.cc
+++ b/src/lib/chemistry/qc/mbptr12/transform_ikjy.cc
@@ -175,7 +175,7 @@ TwoBodyMOIntsTransform_ikjy::init_acc()
 }
 
 void
-TwoBodyMOIntsTransform_ikjy::check_int_symm(double threshold) const throw (ProgrammingError)
+TwoBodyMOIntsTransform_ikjy::check_int_symm(double threshold) const /*throw (ProgrammingError)*/
 {
   Ref<R12IntsAcc> iacc = ints_acc();
   if (!iacc->is_committed())
diff --git a/src/lib/chemistry/qc/mbptr12/transform_ikjy.h b/src/lib/chemistry/qc/mbptr12/transform_ikjy.h
index 5697813..4be38e4 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ikjy.h
+++ b/src/lib/chemistry/qc/mbptr12/transform_ikjy.h
@@ -70,7 +70,7 @@ public:
   /// Computes transformed integrals
   void compute();
   /// Check symmetry of transformed integrals
-  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const throw (ProgrammingError);
+  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const /*throw (ProgrammingError)*/;
 };
 
 }
diff --git a/src/lib/chemistry/qc/mbptr12/transform_ixjy.cc b/src/lib/chemistry/qc/mbptr12/transform_ixjy.cc
index 2548296..b4f08cd 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ixjy.cc
+++ b/src/lib/chemistry/qc/mbptr12/transform_ixjy.cc
@@ -182,7 +182,7 @@ TwoBodyMOIntsTransform_ixjy::init_acc()
 }
 
 void
-TwoBodyMOIntsTransform_ixjy::check_int_symm(double threshold) const throw (ProgrammingError)
+TwoBodyMOIntsTransform_ixjy::check_int_symm(double threshold) const /*throw (ProgrammingError)*/
 {
   Ref<R12IntsAcc> iacc = ints_acc();
   if (!iacc->is_committed())
diff --git a/src/lib/chemistry/qc/mbptr12/transform_ixjy.h b/src/lib/chemistry/qc/mbptr12/transform_ixjy.h
index 8fda231..a10e4ef 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_ixjy.h
+++ b/src/lib/chemistry/qc/mbptr12/transform_ixjy.h
@@ -71,7 +71,7 @@ public:
   /// Computes transformed integrals
   void compute();
   /// Check symmetry of transformed integrals
-  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const throw (ProgrammingError);
+  void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const /*throw (ProgrammingError)*/;
 };
 
 }
diff --git a/src/lib/chemistry/qc/mbptr12/transform_tbint.h b/src/lib/chemistry/qc/mbptr12/transform_tbint.h
index 731a53c..57e4e19 100644
--- a/src/lib/chemistry/qc/mbptr12/transform_tbint.h
+++ b/src/lib/chemistry/qc/mbptr12/transform_tbint.h
@@ -196,7 +196,7 @@ public:
   /// Computes transformed integrals
   virtual void compute() = 0;
   /// Check symmetry of transformed integrals
-  virtual void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const throw (ProgrammingError) =0;
+  virtual void check_int_symm(double threshold = TwoBodyMOIntsTransform::zero_integral) const /*throw (ProgrammingError)*/ =0;
   /// Make the transform obsolete. Next call to compute() will recompute
   virtual void obsolete();