diff --git a/deluge/_libtorrent.py b/deluge/_libtorrent.py
index e68e53580..e2818df80 100644
--- a/deluge/_libtorrent.py
+++ b/deluge/_libtorrent.py
@@ -46,11 +46,17 @@ supports.
 """
 
 REQUIRED_VERSION = "0.14.9.0"
+# The first major version (and all subsequent ones) to be unsupported.
+UNSUPPORTED_VERSION = "1.1.0.0"
+
 
 def check_version(lt):
     from deluge.common import VersionSplit
-    if VersionSplit(lt.version) < VersionSplit(REQUIRED_VERSION):
-        raise ImportError("This version of Deluge requires libtorrent >=%s!" % REQUIRED_VERSION)
+    if (VersionSplit(lt.version) < VersionSplit(REQUIRED_VERSION) or
+            VersionSplit(lt.version) >= VersionSplit(UNSUPPORTED_VERSION)):
+        raise ImportError("This version of Deluge requires libtorrent >=%s and not >= %s."
+                          % (REQUIRED_VERSION, UNSUPPORTED_VERSION))
+
 
 try:
     import deluge.libtorrent as lt