diff --git a/banduppy/unfolding_path.py b/banduppy/unfolding_path.py
index a551e7a..10a6f37 100644
--- a/banduppy/unfolding_path.py
+++ b/banduppy/unfolding_path.py
@@ -9,6 +9,8 @@
 from  irrep.bandstructure import BandStructure
 if  irrep.__version__ <"1.6.2" :
     raise ImportError("A critical bug was found in irrep-1.6.1, which caused incorrect results for unfolding with spin-orbit. Please ipdate irrep to 1.6.2 or newer (when available)")
+if  irrep.__version__ <"1.7" :
+    raise ImportError("this version of banduppy is compatible only with irrep>=1.7")
 
 from collections import Iterable
 
@@ -49,7 +51,7 @@ def print_PBZ_SBZ(self):
            j= self.kpointsPBZ_unique_index_SBZ[self.kpointsPBZ_index_in_unique[i]]
            print (i,kp,j,self.kpointsSBZ[j])
 
-    def unfold(self,bandstructure,suffix="",write_to_file=True):
+    def unfold(self,bandstructure,suffix="",write_to_file=True,saveWF=False):
      #  first evaluate the path as line ad store it
         if len(suffix)>0 :
             suffix = "-"+suffix
@@ -67,7 +69,7 @@ def unfold(self,bandstructure,suffix="",write_to_file=True):
         for ik,kpPBZu in enumerate(self.kpointsPBZ_unique):
             jk=self.kpointsPBZ_unique_index_SBZ[ik]
             if jk in kpSBZcalc:
-                unfolded_unique[ik]=kpSBZcalc[jk].unfold(supercell=self.supercell,kptPBZ=kpPBZu)
+                unfolded_unique[ik]=kpSBZcalc[jk].unfold(supercell=self.supercell,kptPBZ=kpPBZu,saveWF=saveWF)
         unfolded_found={}
         for ik,kpt in enumerate(self.kpointsPBZ):
             jk=self.kpointsPBZ_index_in_unique[ik]
@@ -123,7 +125,7 @@ def __init__(self,supercell=np.eye(3,dtype=int),pathPBZ=[],nk=11,labels=None):
                 assert start.shape==end.shape==(3,)
                 kpointsPBZ=np.vstack( (kpointsPBZ,start[None,:]+np.linspace(0,1.,next(nkgen))[:,None]*(end-start)[None,:] ) )
                 self.i_labels[kpointsPBZ.shape[0]-1]=l2
-        super(UnfoldingPath,self).__init__(supercell,kpointsPBZ)
+        super().__init__(supercell,kpointsPBZ)
 
            
     @property
@@ -134,9 +136,9 @@ def path_str(self):
             result.append("{:10.6f} {:8s} {:12.8f} {:12.8f} {:12.8f}".format(kl[0],kl[1],n[0],n[1],n[2]))
         return "".join("# "+l+"\n" for l in result)
 
-    def unfold(self,bandstructure,break_thresh=0.1,suffix=""):
+    def unfold(self,bandstructure,break_thresh=0.1,suffix="",saveWF=False):
      #  first evaluate the path as line ad store it
-        super(UnfoldingPath,self).unfold(bandstructure,write_to_file=False)
+        super().unfold(bandstructure,write_to_file=False,saveWF=saveWF)
         if len(suffix)>0 :
             suffix = "-"+suffix
         self.kpline=bandstructure.KPOINTSline(kpred=self.kpointsPBZ,breakTHRESH=break_thresh)
diff --git a/setup.py b/setup.py
index d8de5a8..0a501ef 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
      description="BandUPpy: Python interfaceof the BandUP code",
      long_description=long_description,
      long_description_content_type="text/markdown",
-     install_requires=['numpy', 'scipy >= 1.0', 'matplotlib' ,'irrep>=1.6.2'],
+     install_requires=['numpy', 'scipy >= 1.0', 'matplotlib' ,'irrep>=1.7'],
      url="https://www.ifm.liu.se/theomod/compphys/band-unfolding/",
      packages=setuptools.find_packages(),
      classifiers=[
diff --git a/tutorials/QE-noSOC/run_banduppy.py b/tutorials/QE-noSOC/run_banduppy.py
index 7ca7819..dd3e040 100755
--- a/tutorials/QE-noSOC/run_banduppy.py
+++ b/tutorials/QE-noSOC/run_banduppy.py
@@ -74,8 +74,8 @@
             bands=banduppy.BandStructure(code="espresso", prefix="bulk_Si")
         pickle.dump(bands,open("bandstructure.pickle","wb"))
 
-    unfold_path.unfold(bands,break_thresh=0.1,suffix="path")
-    unfold.unfold(bands,suffix="GL")
+    unfold_path.unfold(bands,break_thresh=0.1,suffix="path",saveWF=True)
+    unfold.unfold(bands,suffix="GL",saveWF=True)
     pickle.dump(unfold_path,open("unfold-path.pickle","wb"))
     pickle.dump(unfold,open("unfold.pickle","wb"))