diff --git a/pkg/cloud/gcp/actuators/machine/reconciler.go b/pkg/cloud/gcp/actuators/machine/reconciler.go
index 8583a80cc..4718a0db2 100644
--- a/pkg/cloud/gcp/actuators/machine/reconciler.go
+++ b/pkg/cloud/gcp/actuators/machine/reconciler.go
@@ -149,11 +149,15 @@ func (r *Reconciler) create() error {
 	}
 
 	var guestAccelerators = []*compute.AcceleratorConfig{}
-	// guestAccelerators slice can not be longer than 1
-	guestAccelerators = append(guestAccelerators, &compute.AcceleratorConfig{
-		AcceleratorType:  fmt.Sprintf(acceleratorTypeFmt, zone, r.providerSpec.GuestAccelerators[0].AcceleratorType),
-		AcceleratorCount: r.providerSpec.GuestAccelerators[0].AcceleratorCount,
-	})
+
+	if l := len(r.providerSpec.GuestAccelerators); l == 1 {
+		guestAccelerators = append(guestAccelerators, &compute.AcceleratorConfig{
+			AcceleratorType:  fmt.Sprintf(acceleratorTypeFmt, zone, r.providerSpec.GuestAccelerators[0].AcceleratorType),
+			AcceleratorCount: r.providerSpec.GuestAccelerators[0].AcceleratorCount,
+		})
+	} else if l > 1 {
+		return machinecontroller.InvalidMachineConfiguration(fmt.Sprint("More than one type of accelerator provided. Instances support only one accelerator type at a time."))
+	}
 
 	instance.GuestAccelerators = guestAccelerators