--- system-config-kdump-2.0.13/src/system-config-kdump.py.than	2018-01-09 10:20:36.671165411 -0500
+++ system-config-kdump-2.0.13/src/system-config-kdump.py	2018-01-09 10:17:12.801156087 -0500
@@ -1295,8 +1295,9 @@
 
     def crashkernel_use_offset(self, state):
         """
-        It's called whenever the crashkernel option has offset like 128@16M or 512M-2G:64M,2G-:128@16M
-        Set up sensitive of widgets. If offset is used the Manual radion button will be disable and 
+        It's called whenever the crashkernel option has offset like 128M@16M or 512M-2G:64M,2G-:128@16M
+        or 512M-2G:64M,2G-:128M
+        Set up sensitive of widgets. Set Manual radion button to insensitive if offset is used.
         only expert settings allows the user to enter the extended options.
         """
         self.manualdump_radiobutton.set_sensitive(state)
@@ -1312,9 +1313,10 @@
     def check_crashkernel_use_offset(self):
         """"
         It's called when you want to check whether crashkernel uses offset like
-        128@16M or 512M-2G:64M,2G-:128@16M
+        128M@16M or 512M-2G:64M,2G-:128@16M or 512M-2G:64M,2G-:128M
         """
-        if self.get_crashkernel(self.my_settings.commandline).find("@") != -1:
+        cmdline = self.my_settings.commandline
+        if self.get_crashkernel(cmdline).find(":") != -1 or self.get_crashkernel(cmdline).find("@") != -1:
            return True
         else:
            return False
@@ -1625,7 +1627,7 @@
             if value == "auto":
                 self.auto_radiobutton.set_active(True)
                 self.kdump_auto_toggled(self.auto_radiobutton)
-            elif value.find("@") != -1:
+            elif value.find(":") != -1 or value.find("@") != -1:
                 self.crashkernel_use_offset(False)
             else:
                 size = None