diff --git a/pkg/machinery/config/types/v1alpha1/v1alpha1_provider.go b/pkg/machinery/config/types/v1alpha1/v1alpha1_provider.go
index 8d14752161..ee0f6e7b93 100644
--- a/pkg/machinery/config/types/v1alpha1/v1alpha1_provider.go
+++ b/pkg/machinery/config/types/v1alpha1/v1alpha1_provider.go
@@ -1327,6 +1327,20 @@ func (i *InstallConfig) DiskMatchExpression() (*cel.Expression, error) {
 		exprs = append(exprs, patternMatcherExpr(selector.Modalias, "modalias"))
 	}
 
+	// disk.transport != "" (otherwise it might select e.g. DM devices)
+	exprs = append(exprs,
+		builder.NewCall(
+			builder.NextID(),
+			operators.NotEquals,
+			builder.NewSelect(
+				builder.NextID(),
+				builder.NewIdent(builder.NextID(), "disk"),
+				"transport",
+			),
+			builder.NewLiteral(builder.NextID(), types.String("")),
+		),
+	)
+
 	if selector.Type != "" {
 		switch selector.Type {
 		case "nvme": // disk.transport == "nvme"
@@ -1339,18 +1353,8 @@ func (i *InstallConfig) DiskMatchExpression() (*cel.Expression, error) {
 				builder.NewIdent(builder.NextID(), "disk"),
 				"rotational",
 			))
-		case "ssd": // disk.transport != "" && !disk.rotational
+		case "ssd": // !disk.rotational
 			exprs = append(exprs,
-				builder.NewCall(
-					builder.NextID(),
-					operators.NotEquals,
-					builder.NewSelect(
-						builder.NextID(),
-						builder.NewIdent(builder.NextID(), "disk"),
-						"transport",
-					),
-					builder.NewLiteral(builder.NextID(), types.String("")),
-				),
 				builder.NewCall(
 					builder.NextID(),
 					operators.LogicalNot,
diff --git a/pkg/machinery/config/types/v1alpha1/v1alpha1_provider_test.go b/pkg/machinery/config/types/v1alpha1/v1alpha1_provider_test.go
index 7328613c04..812db8320e 100644
--- a/pkg/machinery/config/types/v1alpha1/v1alpha1_provider_test.go
+++ b/pkg/machinery/config/types/v1alpha1/v1alpha1_provider_test.go
@@ -35,7 +35,7 @@ func TestInstallDiskSelector(t *testing.T) {
 				},
 			},
 
-			expected: `disk.size <= 262144u && !disk.readonly && !disk.cdrom`,
+			expected: `disk.size <= 262144u && disk.transport != "" && !disk.readonly && !disk.cdrom`,
 		},
 		{
 			name: "size and type",
@@ -49,7 +49,8 @@ func TestInstallDiskSelector(t *testing.T) {
 				Type: v1alpha1.InstallDiskType("nvme"),
 			},
 
-			expected: `disk.size == 1048576u && disk.transport == "nvme" && !disk.readonly && !disk.cdrom`,
+			expected: `disk.size == 1048576u && disk.transport != "" && disk.transport == "nvme" && !disk.readonly &&
+!disk.cdrom`,
 		},
 		{
 			name: "size and type and modalias",
@@ -64,8 +65,8 @@ func TestInstallDiskSelector(t *testing.T) {
 				Modalias: "pci:1234:5678*",
 			},
 
-			expected: `disk.size == 1048576u && glob("pci:1234:5678*", disk.modalias) && disk.rotational &&
-!disk.readonly && !disk.cdrom`,
+			expected: `disk.size == 1048576u && glob("pci:1234:5678*", disk.modalias) && disk.transport != "" &&
+disk.rotational && !disk.readonly && !disk.cdrom`,
 		},
 		{
 			name: "ssd",