diff --git a/cli/cmds/root.go b/cli/cmds/root.go
index 97eb0921..3a37a24e 100644
--- a/cli/cmds/root.go
+++ b/cli/cmds/root.go
@@ -92,10 +92,10 @@ func CobraFlagNamespace(appCtx *AppContext, flag *pflag.FlagSet) {
 }
 
 func InitializeConfig(cmd *cobra.Command) {
-	// Use a "K3KCLI" prefix so that only namespaced environment variables (e.g.
-	// K3KCLI_VERSION) bind to flags. Without a prefix, common environment variables
+	// Use a "K3K" prefix so that only namespaced environment variables (e.g.
+	// K3K_VERSION) bind to flags. Without a prefix, common environment variables
 	// such as VERSION, MODE or TOKEN would silently override the matching CLI flags.
-	viper.SetEnvPrefix("K3KCLI")
+	viper.SetEnvPrefix("K3K")
 	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
 	viper.AutomaticEnv()
 
diff --git a/cli/cmds/root_test.go b/cli/cmds/root_test.go
index b4d8ee43..eecc48f0 100644
--- a/cli/cmds/root_test.go
+++ b/cli/cmds/root_test.go
@@ -21,7 +21,7 @@ func Test_InitializeConfig_envPrefix(t *testing.T) {
 		},
 		{
 			name:    "prefixed env binds to flag",
-			envName: "K3KCLI_VERSION",
+			envName: "K3K_VERSION",
 			want:    "1h",
 		},
 	}