diff --git a/lib/tfw/components/commands_equal.py b/lib/tfw/components/commands_equal.py
index 713d227..64ea20c 100644
--- a/lib/tfw/components/commands_equal.py
+++ b/lib/tfw/components/commands_equal.py
@@ -3,17 +3,23 @@
 
 from shlex import split
 
+from tfw.decorators.lazy_property import lazy_property
+
 
 class CommandsEqual:
-    def __init__(self, command_1, command_2):
-        self.command_1 = command_1
-        self.command_2 = command_2
+    def __init__(self, command_1, command_2, fuzzyness=1):
+        self.command_1 = split(command_1)
+        self.command_2 = split(command_2)
+        self.fuzzyness = fuzzyness
 
     def __bool__(self):
-        parts_1 = split(self.command_1)
-        parts_2 = split(self.command_2)
-        return (
-            parts_1[0] == parts_2[0]
-            and set(parts_1) == set(parts_2)
-        )
+        return self.similarity >= self.fuzzyness
 
+    @lazy_property
+    def similarity(self):
+        parts_1 = set(self.command_1)
+        parts_2 = set(self.command_2)
+
+        difference = parts_1 - parts_2
+        deviance = len(difference) / len(max(parts_1, parts_2))
+        return 1 - deviance