diff --git a/src/iis.jl b/src/iis.jl
index 95032f4..04699fa 100644
--- a/src/iis.jl
+++ b/src/iis.jl
@@ -76,8 +76,8 @@ function MOI.set(
 )
     optimizer.original_model = model
     # this also resets the results
-    results = InfeasibilityData[]
-    status = MOI.COMPUTE_CONFLICT_NOT_CALLED
+    optimizer.results = InfeasibilityData[]
+    optimizer.status = MOI.COMPUTE_CONFLICT_NOT_CALLED
     return
 end
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 1b37b87..692be44 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -486,6 +486,9 @@ function test_iis()
     @test data[].irreducible
     @test data[].metadata == MOIIS.NoData()
     @test _isequal_unordered(data[].constraints, [index(c2), index(c1)])
+    MOI.set(solver, MOIIS.InfeasibleModel(), backend(model))
+    @test isempty(solver.results)
+    @test solver.status == MOI.COMPUTE_CONFLICT_NOT_CALLED
     return
 end