diff --git a/Code/DataStructs/SparseIntVect.h b/Code/DataStructs/SparseIntVect.h
index faaa28b3f..800deb617 100644
--- a/Code/DataStructs/SparseIntVect.h
+++ b/Code/DataStructs/SparseIntVect.h
@@ -260,6 +260,62 @@ namespace RDKit{
       SparseIntVect<IndexType> res(*this);
       return res-=other;
     }
+    SparseIntVect<IndexType> &
+    operator*= (int v) {
+      typename StorageType::iterator iter=d_data.begin();
+      while(iter!=d_data.end()){
+        iter->second *= v;
+        ++iter;
+      }
+      return *this;
+    };
+    SparseIntVect<IndexType> &
+    operator* (int v) {
+      SparseIntVect<IndexType> res(*this);
+      return res*=v;
+    };
+    SparseIntVect<IndexType> &
+    operator/= (int v) {
+      typename StorageType::iterator iter=d_data.begin();
+      while(iter!=d_data.end()){
+        iter->second /= v;
+        ++iter;
+      }
+      return *this;
+    };
+    SparseIntVect<IndexType> &
+    operator/ (int v) {
+      SparseIntVect<IndexType> res(*this);
+      return res/=v;
+    };
+    SparseIntVect<IndexType> &
+    operator+= (int v) {
+      typename StorageType::iterator iter=d_data.begin();
+      while(iter!=d_data.end()){
+        iter->second += v;
+        ++iter;
+      }
+      return *this;
+    };
+    SparseIntVect<IndexType> &
+    operator+ (int v) {
+      SparseIntVect<IndexType> res(*this);
+      return res+=v;
+    };
+    SparseIntVect<IndexType> &
+    operator-= (int v) {
+      typename StorageType::iterator iter=d_data.begin();
+      while(iter!=d_data.end()){
+        iter->second -= v;
+        ++iter;
+      }
+      return *this;
+    };
+    SparseIntVect<IndexType> &
+    operator- (int v) {
+      SparseIntVect<IndexType> res(*this);
+      return res-=v;
+    };
 
     bool operator==(const SparseIntVect<IndexType> &v2) const{
       if(d_length!=v2.d_length){
diff --git a/Code/DataStructs/Wrap/SparseIntVect.cpp b/Code/DataStructs/Wrap/SparseIntVect.cpp
index d089dff9b..8e21d7ace 100644
--- a/Code/DataStructs/Wrap/SparseIntVect.cpp
+++ b/Code/DataStructs/Wrap/SparseIntVect.cpp
@@ -131,6 +131,14 @@ struct sparseIntVec_wrapper {
       .def(python::self += python::self)
       .def(python::self == python::self)
       .def(python::self != python::self)
+      //.def(python::self - int())
+      .def(python::self -= int())
+      //.def(python::self + int())
+      .def(python::self += int())
+      //.def(python::self / int())
+      .def(python::self /= int())
+      //.def(python::self * int())
+      .def(python::self *= int())
       .def("GetTotalVal", &SparseIntVect<IndexType>::getTotalVal,
 	   (python::args("useAbs")=false),
 	   "Get the sum of the values in the vector, basically L1 norm")