diff --git a/tests/templates/kuttl/kerberos/02-create-kerberos-secretclass.yaml.j2 b/tests/templates/kuttl/kerberos/02-create-kerberos-secretclass.yaml.j2
index 31f3d209..2ff21169 100644
--- a/tests/templates/kuttl/kerberos/02-create-kerberos-secretclass.yaml.j2
+++ b/tests/templates/kuttl/kerberos/02-create-kerberos-secretclass.yaml.j2
@@ -3,4 +3,4 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestStep
 commands:
   # We need to replace $NAMESPACE (by KUTTL)
-  - script: envsubst < 02-create-kerberos-secretclass.txt | kubectl apply -n $NAMESPACE -f -
+  - script: envsubst '$NAMESPACE' < 02-create-kerberos-secretclass.txt | kubectl apply -n $NAMESPACE -f -
diff --git a/tests/templates/kuttl/kerberos/12-rego-rules.yaml.j2 b/tests/templates/kuttl/kerberos/12-rego-rules.yaml.j2
index 6a1faadc..7943e013 100644
--- a/tests/templates/kuttl/kerberos/12-rego-rules.yaml.j2
+++ b/tests/templates/kuttl/kerberos/12-rego-rules.yaml.j2
@@ -3,4 +3,4 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestStep
 commands:
   # We need to replace $NAMESPACE (by KUTTL)
-  - script: envsubst < 12-rego-rules.txt | kubectl apply -n $NAMESPACE -f -
+  - script: envsubst '$NAMESPACE' < 12-rego-rules.txt | kubectl apply -n $NAMESPACE -f -
diff --git a/tests/templates/kuttl/kerberos/20-install-hdfs.yaml.j2 b/tests/templates/kuttl/kerberos/20-install-hdfs.yaml.j2
index 206a5f98..e673bd2e 100644
--- a/tests/templates/kuttl/kerberos/20-install-hdfs.yaml.j2
+++ b/tests/templates/kuttl/kerberos/20-install-hdfs.yaml.j2
@@ -3,4 +3,4 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestStep
 commands:
   # We need to replace $NAMESPACE (by KUTTL)
-  - script: envsubst < 20-install-hdfs.txt | kubectl apply -n $NAMESPACE -f -
+  - script: envsubst '$NAMESPACE' < 20-install-hdfs.txt | kubectl apply -n $NAMESPACE -f -
diff --git a/tests/templates/kuttl/kerberos/30-access-hdfs.yaml.j2 b/tests/templates/kuttl/kerberos/30-access-hdfs.yaml.j2
index 0b82eef2..7aa0ef80 100644
--- a/tests/templates/kuttl/kerberos/30-access-hdfs.yaml.j2
+++ b/tests/templates/kuttl/kerberos/30-access-hdfs.yaml.j2
@@ -3,4 +3,4 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestStep
 commands:
   # We need to replace $NAMESPACE (by KUTTL)
-  - script: envsubst < 30-access-hdfs.txt | kubectl apply -n $NAMESPACE -f -
+  - script: envsubst '$NAMESPACE' < 30-access-hdfs.txt | kubectl apply -n $NAMESPACE -f -
diff --git a/tests/templates/kuttl/kerberos/32-check-file.yaml.j2 b/tests/templates/kuttl/kerberos/32-check-file.yaml.j2
index 6729414d..2c34b4cc 100644
--- a/tests/templates/kuttl/kerberos/32-check-file.yaml.j2
+++ b/tests/templates/kuttl/kerberos/32-check-file.yaml.j2
@@ -3,4 +3,4 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestStep
 commands:
   # We need to replace $NAMESPACE (by KUTTL)
-  - script: envsubst < 32-check-file.txt | kubectl apply -n $NAMESPACE -f -
+  - script: envsubst '$NAMESPACE' < 32-check-file.txt | kubectl apply -n $NAMESPACE -f -