diff --git a/Project.toml b/Project.toml
index f92b685..18e3ff0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -8,7 +8,7 @@ MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 MathOptInterface = "b8f27783-ece8-5eb3-8dc8-9495eed66fee"
 
 [compat]
-JuMP = "1.13 - 1.22.1"
+JuMP = "1.13"
 MacroTools = "^0.5"
 MathOptInterface = "^1"
 julia = "^1.6"
diff --git a/src/LinearFractional.jl b/src/LinearFractional.jl
index 3899ae3..bf55969 100644
--- a/src/LinearFractional.jl
+++ b/src/LinearFractional.jl
@@ -189,11 +189,14 @@ end
 function JuMP.delete(model::LinearFractionalModel, vref::LinearFractionalVariableRef)
     JuMP.delete(model.model, vref.vref)
 end
+
 function JuMP.is_valid(model::LinearFractionalModel, vref::LinearFractionalVariableRef)
-    return (model === vref.model &&
-            is_valid(model.model, vref.vref))
+    return model === vref.model && is_valid(model.model, vref)
 end
 
+function JuMP.is_valid(model::JuMP.GenericModel, vref::LinearFractionalVariableRef)
+    return is_valid(model, vref.vref)
+end
 
 # Internal functions