diff --git a/HISTORY.md b/HISTORY.md
index c577e3bd..10b42440 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -11,6 +11,8 @@
   Switch.  This prevented customizing the MQTT scene topic and payload for
   those devices ([Issue #130][I130])
 
+- Fixed incorrect set-backlight command parsing ([Issue #136][I136])
+
 
 ## [0.6.7]
 
@@ -260,3 +262,4 @@
 [I126]: https://github.com/TD22057/insteon-mqtt/issues/126
 [I130]: https://github.com/TD22057/insteon-mqtt/issues/130
 [I132]: https://github.com/TD22057/insteon-mqtt/issues/132
+[I136]: https://github.com/TD22057/insteon-mqtt/issues/136
diff --git a/insteon_mqtt/device/Dimmer.py b/insteon_mqtt/device/Dimmer.py
index 49ef9abc..926099db 100644
--- a/insteon_mqtt/device/Dimmer.py
+++ b/insteon_mqtt/device/Dimmer.py
@@ -403,7 +403,9 @@ def set_flags(self, on_done, **kwargs):
 
         # Check the input flags to make sure only ones we can understand were
         # passed in.
-        flags = set(["backlight", "on_level"])
+        FLAG_BACKLIGHT = "backlight"
+        FLAG_ON_LEVEL = "on_level"
+        flags = set([FLAG_BACKLIGHT, FLAG_ON_LEVEL])
         unknown = set(kwargs.keys()).difference(flags)
         if unknown:
             raise Exception("Unknown Dimmer flags input: %s.\n Valid flags "
@@ -412,12 +414,12 @@ def set_flags(self, on_done, **kwargs):
         # Start a command sequence so we can call the flag methods in series.
         seq = CommandSeq(self.protocol, "Dimmer set_flags complete", on_done)
 
-        if "backlink" in kwargs:
-            backlight = util.input_byte(kwargs, "backlight")
+        if FLAG_BACKLIGHT in kwargs:
+            backlight = util.input_byte(kwargs, FLAG_BACKLIGHT)
             seq.add(self.set_backlight, backlight)
 
-        if "on_level" in kwargs:
-            on_level = util.input_byte(kwargs, "on_level")
+        if FLAG_ON_LEVEL in kwargs:
+            on_level = util.input_byte(kwargs, FLAG_ON_LEVEL)
             seq.add(self.set_on_level, on_level)
 
         seq.run()
diff --git a/insteon_mqtt/device/KeypadLinc.py b/insteon_mqtt/device/KeypadLinc.py
index 9e57cc33..276c5b01 100644
--- a/insteon_mqtt/device/KeypadLinc.py
+++ b/insteon_mqtt/device/KeypadLinc.py
@@ -586,7 +586,9 @@ def set_flags(self, on_done, **kwargs):
 
         # Check the input flags to make sure only ones we can understand were
         # passed in.
-        flags = set(["backlight", "on_level"])
+        FLAG_BACKLIGHT = "backlight"
+        FLAG_ON_LEVEL = "on_level"
+        flags = set([FLAG_BACKLIGHT, FLAG_ON_LEVEL])
         unknown = set(kwargs.keys()).difference(flags)
         if unknown:
             raise Exception("Unknown KeypadLinc flags input: %s.\n Valid "
@@ -596,12 +598,12 @@ def set_flags(self, on_done, **kwargs):
         seq = CommandSeq(self.protocol, "KeypadLinc set_flags complete",
                          on_done)
 
-        if "backlink" in kwargs:
-            backlight = util.input_byte(kwargs, "backlight")
+        if FLAG_BACKLIGHT in kwargs:
+            backlight = util.input_byte(kwargs, FLAG_BACKLIGHT)
             seq.add(self.set_backlight, backlight)
 
-        if "on_level" in kwargs:
-            on_level = util.input_byte(kwargs, "on_level")
+        if FLAG_ON_LEVEL in kwargs:
+            on_level = util.input_byte(kwargs, FLAG_ON_LEVEL)
             seq.add(self.set_on_level, on_level)
 
         seq.run()
diff --git a/insteon_mqtt/device/Outlet.py b/insteon_mqtt/device/Outlet.py
index 52d32f08..a8617235 100644
--- a/insteon_mqtt/device/Outlet.py
+++ b/insteon_mqtt/device/Outlet.py
@@ -388,7 +388,8 @@ def set_flags(self, on_done, **kwargs):
 
         # Check the input flags to make sure only ones we can understand were
         # passed in.
-        flags = set(["backlight"])
+        FLAG_BACKLIGHT = "backlight"
+        flags = set([FLAG_BACKLIGHT])
         unknown = set(kwargs.keys()).difference(flags)
         if unknown:
             raise Exception("Unknown Outlet flags input: %s.\n Valid flags "
@@ -397,8 +398,8 @@ def set_flags(self, on_done, **kwargs):
         # Start a command sequence so we can call the flag methods in series.
         seq = CommandSeq(self.protocol, "Outlet set_flags complete", on_done)
 
-        if "backlink" in kwargs:
-            backlight = util.input_byte(kwargs, "backlight")
+        if FLAG_BACKLIGHT in kwargs:
+            backlight = util.input_byte(kwargs, FLAG_BACKLIGHT)
             seq.add(self.set_backlight, backlight)
 
         seq.run()
diff --git a/insteon_mqtt/device/Switch.py b/insteon_mqtt/device/Switch.py
index de8918bf..ae15e1f5 100644
--- a/insteon_mqtt/device/Switch.py
+++ b/insteon_mqtt/device/Switch.py
@@ -318,7 +318,8 @@ def set_flags(self, on_done, **kwargs):
 
         # Check the input flags to make sure only ones we can understand were
         # passed in.
-        flags = set(["backlight"])
+        FLAG_BACKLIGHT = "backlight"
+        flags = set([FLAG_BACKLIGHT])
         unknown = set(kwargs.keys()).difference(flags)
         if unknown:
             raise Exception("Unknown Switch flags input: %s.\n Valid flags "
@@ -327,8 +328,8 @@ def set_flags(self, on_done, **kwargs):
         # Start a command sequence so we can call the flag methods in series.
         seq = CommandSeq(self.protocol, "Switch set_flags complete", on_done)
 
-        if "backlink" in kwargs:
-            backlight = util.input_byte(kwargs, "backlight")
+        if FLAG_BACKLIGHT in kwargs:
+            backlight = util.input_byte(kwargs, FLAG_BACKLIGHT)
             seq.add(self.set_backlight, backlight)
 
         seq.run()