diff --git a/controllers/drupalsite_controller_utils.go b/controllers/drupalsite_controller_utils.go
index 4c16babf001cec25d0ec0d3aee2c9f2845b3b960..aae804da8afcf5d2330719d04b6994004a90707e 100644
--- a/controllers/drupalsite_controller_utils.go
+++ b/controllers/drupalsite_controller_utils.go
@@ -31,7 +31,6 @@ import (
 	batchv1 "k8s.io/api/batch/v1"
 	corev1 "k8s.io/api/core/v1"
 	k8sapierrors "k8s.io/apimachinery/pkg/api/errors"
-	k8sapiresource "k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"knative.dev/pkg/apis"
@@ -180,18 +179,8 @@ func (r *DrupalSiteReconciler) ensureSpecFinalizer(ctx context.Context, drp *web
 			return false, newApplicationError(err, ErrClientK8s)
 		}
 
-		// Parse the input strings (Mi or Gi) into 'quantity' type for easier comparison
-		destinationDiskSize, err := k8sapiresource.ParseQuantity(drp.Spec.Configuration.DiskSize)
-		if err != nil {
-			return false, newApplicationError(err, ErrFunctionDomain)
-		}
-		sourceDiskSize, err := k8sapiresource.ParseQuantity(sourceSite.Spec.Configuration.DiskSize)
-		if err != nil {
-			return false, newApplicationError(err, ErrFunctionDomain)
-		}
-
 		// The destination disk size must be at least as large as the source
-		if destinationDiskSize.Cmp(sourceDiskSize) == -1 {
+		if drp.Spec.Configuration.DiskSize != sourceSite.Spec.Configuration.DiskSize {
 			drp.Spec.Configuration.DiskSize = sourceSite.Spec.Configuration.DiskSize
 			update = true
 		}