diff --git a/orm/services/flavor_manager/fms_rest/data/wsme/models.py b/orm/services/flavor_manager/fms_rest/data/wsme/models.py
index d5097db5..ced99d93 100755
--- a/orm/services/flavor_manager/fms_rest/data/wsme/models.py
+++ b/orm/services/flavor_manager/fms_rest/data/wsme/models.py
@@ -302,13 +302,15 @@ class Flavor(Model):
                 raise ErrorStatus(400, "ephemeral must be a number")
             if int(self.ram) not in list(range(1024, vram_limit + 1, 1024)):
                 raise ErrorStatus(400,
-                                  "ram value is out of range. Expected range"
-                                  " is 1024(1GB)-%6d(%3dGB) and must be a"
-                                  " multiple of 1024" %
-                                  (vram_limit, vram_limit / 1024))
+                                  "ram value % is out of range. Expected range"
+                                  " is 1024(1GB)-% (% GB) and must be a"
+                                  " multiple of 1024".format(
+                                      self.ram,
+                                      vram_limit,
+                                      vram_limit // 1024))
             if int(self.vcpus) not in list(range(1, vcpu_limit + 1)):
-                raise ErrorStatus(400, "vcpus value is out of range. Expected"
-                                  "range is 1-%2d" % (vcpu_limit))
+                raise ErrorStatus(400, "vcpus value % is out of range. Expected"
+                                  "range is 1-%" % (str(self.vcpus), str(vcpu_limit)))
             if int(self.disk) < 0:
                 raise ErrorStatus(400, "disk cannot be less than zero")
 
@@ -318,16 +320,20 @@ class Flavor(Model):
                     and int(self.ephemeral) not in
                     list(range(0, ephemeral_limit + 1))):
                 raise ErrorStatus(400,
-                                  "ephemeral value is out of range. Expected"
-                                  " range is 0-%5d(%2dTB)" %
-                                  (ephemeral_limit, ephemeral_limit / 1000))
+                                  "ephemeral value {} is out of range. Expected"
+                                  " range is 0-{} ({}TB)".format(
+                                      self.ephemeral,
+                                      ephemeral_limit,
+                                      ephemeral_limit // 1000))
 
             if int(self.swap) not in list(range(0, swap_file_limit + 1, 1024)):
                 raise ErrorStatus(400,
-                                  "swap value is out of range. Expected"
-                                  " range is 0-%6d(%3dGB) and must be a"
-                                  " multiple of 1024" %
-                                  (swap_file_limit, swap_file_limit / 1024))
+                                  "swap value {} is out of range. Expected"
+                                  " range is 0-{}({}GB) and must be a"
+                                  " multiple of 1024".format(
+                                      self.swap,
+                                      swap_file_limit,
+                                      swap_file_limit // 1024))
         except ValueError:
             raise ErrorStatus(400, "ram, vcpus, disk, ephemeral and swap must"
                               " be integers")