diff --git a/Project.toml b/Project.toml
index c1396ef1..9dd673f1 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Accessors"
 uuid = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
 authors = ["Takafumi Arakaki <aka.tkf@gmail.com>", "Jan Weidner <jw3126@gmail.com> and contributors"]
-version = "0.1.39"
+version = "0.1.40"
 
 [deps]
 CompositionsBase = "a33af91c-f02d-484b-be07-31d278c5ca2b"
diff --git a/src/sugar.jl b/src/sugar.jl
index 640636b3..cff269d6 100644
--- a/src/sugar.jl
+++ b/src/sugar.jl
@@ -280,7 +280,7 @@ function get_update_op(sym::Symbol)
         msg = "Operation $sym doesn't look like an assignment"
         throw(ArgumentError(msg))
     end
-    Symbol(s[1:end-1])
+    Symbol(chop(s))
 end
 
 """
diff --git a/test/test_core.jl b/test/test_core.jl
index 791818f7..ede62884 100644
--- a/test/test_core.jl
+++ b/test/test_core.jl
@@ -46,6 +46,10 @@ end
     @reset nt.a = 5
     @test nt === (a=5,)
 
+    issue184 = 0x5eb720ca5fd4f4b6
+    z = 0x82307475878967f2
+    @test (issue184 ⊻ z ) === (@set issue184 ⊻= z)
+
     @test_throws Exception eval(:(@reset func(x, y) = 100))
 end