diff --git a/scripts/create_properties_ezfio.py b/scripts/create_properties_ezfio.py
index 6872232..d2fda6c 100755
--- a/scripts/create_properties_ezfio.py
+++ b/scripts/create_properties_ezfio.py
@@ -67,7 +67,7 @@ file = open(tmp_filename,'w')
 # ----
 
 print >>file, """
-(* File generated by ${QMCCHEM_PATH}/src/create_properties.py. Do not
+(* File generated by ${QMCCHEM_PATH}/scripts/create_properties.py. Do not
    modify here
  *)
 
@@ -125,7 +125,7 @@ for p in properties:
 print >>file, """;;
 
 let of_string s = 
-  match (String.lowercase s) with 
+  match (String.lowercase_ascii s) with 
   | "cpu" -> Cpu
   | "wall" -> Wall
   | "accep" -> Accep"""
diff --git a/src/det.irp.f b/src/det.irp.f
index 17410f0..92ae46e 100644
--- a/src/det.irp.f
+++ b/src/det.irp.f
@@ -1543,7 +1543,7 @@ END_PROVIDER
   DaC = 0.d0
   CDb = 0.d0
 
-  if (det_num < ishft(det_alpha_num*det_beta_num,2)) then
+  if (det_num < ishft(det_alpha_num*det_beta_num,-2)) then
 
     det_num4 = iand(det_num,not(3))
     !DIR$ VECTOR ALIGNED