diff --git a/LaueTools/IOimagefile.py b/LaueTools/IOimagefile.py
index 80a3b84..c68f4ff 100755
--- a/LaueTools/IOimagefile.py
+++ b/LaueTools/IOimagefile.py
@@ -1529,5 +1529,6 @@ def get_imagesize(framedim, nbbits_per_pixel, headersize_bytes):
     """
     return (framedim[0] * framedim[1] * nbbits_per_pixel + headersize_bytes * 8) // 8
 
+
 if __name__=='__main__':
     pass
diff --git a/LaueTools/matchingrate.py b/LaueTools/matchingrate.py
index 365db81..f5f8668 100755
--- a/LaueTools/matchingrate.py
+++ b/LaueTools/matchingrate.py
@@ -314,7 +314,7 @@ def SpotLinks(twicetheta_exp,
             linkIntensity.append(dataintensity_exp[exp_id])
             # Dataxy.append([ LaueToolsframe.data_pixX[val[0]], LaueToolsframe.data_pixY[val[0]]])
 
-    linkedspots_link = np.array(listofpairs)
+    linkedspots_link = np.array(listofpairs, dtype=object)
     linkExpMiller_link = linkExpMiller
     linkIntensity_link = linkIntensity
     linkResidues_link = linkResidues