diff --git a/pkg/apis/controller/experiments/v1beta1/experiment_types.go b/pkg/apis/controller/experiments/v1beta1/experiment_types.go
index 1541a52b8f7..19c5a83f051 100644
--- a/pkg/apis/controller/experiments/v1beta1/experiment_types.go
+++ b/pkg/apis/controller/experiments/v1beta1/experiment_types.go
@@ -217,11 +217,10 @@ type FeasibleSpace struct {
 type Distribution string
 
 const (
-	DistributionUniform     Distribution = "uniform"
-	DistributionLogUniform  Distribution = "logUniform"
-	DistributionNormal      Distribution = "normal"
-	DistributionLogNormal   Distribution = "logNormal"
-	DistributionCategorical Distribution = "categorical"
+	DistributionUniform    Distribution = "uniform"
+	DistributionLogUniform Distribution = "logUniform"
+	DistributionNormal     Distribution = "normal"
+	DistributionLogNormal  Distribution = "logNormal"
 )
 
 // TrialTemplate describes structure of trial template