diff --git a/cmd/kubeadm/app/cmd/certs.go b/cmd/kubeadm/app/cmd/certs.go
index 084d472bab5..0ea602c1df1 100644
--- a/cmd/kubeadm/app/cmd/certs.go
+++ b/cmd/kubeadm/app/cmd/certs.go
@@ -274,7 +274,7 @@ func getRenewSubCommands(out io.Writer, kdir string) []*cobra.Command {
 				return err
 			}
 
-			// Get a renewal manager for a actual Cluster configuration
+			// Get a renewal manager for an actual Cluster configuration
 			rm, err := renewal.NewManager(&internalcfg.ClusterConfiguration, kdir)
 			if err != nil {
 				return err
@@ -352,7 +352,7 @@ func getInternalCfg(cfgPath string, kubeconfigPath string, cfg kubeadmapiv1.Clus
 		}
 	}
 
-	// Otherwise read config from --config if provided, otherwise use default configuration
+	// Read config from --config if provided. Otherwise, use the default configuration
 	return configutil.LoadOrDefaultInitConfiguration(cfgPath, cmdutil.DefaultInitConfiguration(), &cfg)
 }
 
diff --git a/cmd/kubeadm/app/cmd/init.go b/cmd/kubeadm/app/cmd/init.go
index 4d1a725ef96..2fc2b3cfcbc 100644
--- a/cmd/kubeadm/app/cmd/init.go
+++ b/cmd/kubeadm/app/cmd/init.go
@@ -113,7 +113,7 @@ func newCmdInit(out io.Writer, initOptions *initOptions) *cobra.Command {
 		Args: cobra.NoArgs,
 	}
 
-	// adds flags to the init command
+	// add flags to the init command.
 	// init command local flags could be eventually inherited by the sub-commands automatically generated for phases
 	AddInitConfigFlags(cmd.Flags(), initOptions.externalInitCfg)
 	AddClusterConfigFlags(cmd.Flags(), initOptions.externalClusterCfg, &initOptions.featureGatesString)
diff --git a/cmd/kubeadm/app/cmd/upgrade/plan.go b/cmd/kubeadm/app/cmd/upgrade/plan.go
index 9eb1f485dba..74df27dca4e 100644
--- a/cmd/kubeadm/app/cmd/upgrade/plan.go
+++ b/cmd/kubeadm/app/cmd/upgrade/plan.go
@@ -286,9 +286,9 @@ func runPlan(flags *planFlags, args []string, printer output.Printer) error {
 			return err
 		}
 
-		// Actually, this is needed for machine readable output only.
+		// Actually, this is needed for machine-readable output only.
 		// printUpgradePlan won't output the configVersionStates as it will simply print the same table several times
-		// in the human readable output if it did so
+		// in the human-readable output if it did so
 		plan.ConfigVersions = configVersionStates
 
 		printUpgradePlan(&up, plan, unstableVersionFlag, isExternalEtcd, os.Stdout, printer)