diff --git a/cmd/release_config/crunch_flags/main.go b/cmd/release_config/crunch_flags/main.go
index 44e553941..cd39ffd11 100644
--- a/cmd/release_config/crunch_flags/main.go
+++ b/cmd/release_config/crunch_flags/main.go
@@ -16,8 +16,8 @@ import (
 )
 
 var (
-	// When a flag declaration has an initial value that is a string, the default workflow is Workflow_Prebuilt.
-	// If the flag name starts with any of prefixes in manualFlagNamePrefixes, it is Workflow_Manual.
+	// When a flag declaration has an initial value that is a string, the default workflow is PREBUILT.
+	// If the flag name starts with any of prefixes in manualFlagNamePrefixes, it is MANUAL.
 	manualFlagNamePrefixes []string = []string{
 		"RELEASE_ACONFIG_",
 		"RELEASE_PLATFORM_",
@@ -133,8 +133,8 @@ func ProcessBuildFlags(dir string, namespaceMap map[string]string) error {
 			Containers:  containers,
 		}
 		description = ""
-		// Most build flags are `workflow: Workflow_Prebuilt`.
-		workflow := rc_proto.Workflow(rc_proto.Workflow_Workflow_Prebuilt)
+		// Most build flags are `workflow: PREBUILT`.
+		workflow := rc_proto.Workflow(rc_proto.Workflow_PREBUILT)
 		switch {
 		case declName == "RELEASE_ACONFIG_VALUE_SETS":
 			if strings.HasPrefix(declValue, "\"") {
@@ -142,21 +142,21 @@ func ProcessBuildFlags(dir string, namespaceMap map[string]string) error {
 			}
 			continue
 		case strings.HasPrefix(declValue, "\""):
-			// String values mean that the flag workflow is (most likely) either Workflow_Manual or Workflow_Prebuilt.
+			// String values mean that the flag workflow is (most likely) either MANUAL or PREBUILT.
 			declValue = declValue[1 : len(declValue)-1]
 			flagDeclaration.Value = &rc_proto.Value{Val: &rc_proto.Value_StringValue{declValue}}
 			for _, prefix := range manualFlagNamePrefixes {
 				if strings.HasPrefix(declName, prefix) {
-					workflow = rc_proto.Workflow(rc_proto.Workflow_Workflow_Manual)
+					workflow = rc_proto.Workflow(rc_proto.Workflow_MANUAL)
 					break
 				}
 			}
 		case declValue == "False" || declValue == "True":
-			// Boolean values are Workflow_Launch flags.
+			// Boolean values are LAUNCH flags.
 			flagDeclaration.Value = &rc_proto.Value{Val: &rc_proto.Value_BoolValue{declValue == "True"}}
-			workflow = rc_proto.Workflow(rc_proto.Workflow_Workflow_Launch)
+			workflow = rc_proto.Workflow(rc_proto.Workflow_LAUNCH)
 		case declValue == "None":
-			// Use Workflow_Prebuilt workflow with no initial value.
+			// Use PREBUILT workflow with no initial value.
 		default:
 			fmt.Printf("%s: Unexpected value %s=%s\n", path, declName, declValue)
 		}
diff --git a/cmd/release_config/release_config_lib/release_config.go b/cmd/release_config/release_config_lib/release_config.go
index a1b10f567..547f0dcd4 100644
--- a/cmd/release_config/release_config_lib/release_config.go
+++ b/cmd/release_config/release_config_lib/release_config.go
@@ -177,7 +177,7 @@ func (config *ReleaseConfig) GenerateReleaseConfig(configs *ReleaseConfigs) erro
 
 	contributionsToApply = append(contributionsToApply, config.Contributions...)
 
-	workflowManual := rc_proto.Workflow(rc_proto.Workflow_Workflow_Manual)
+	workflowManual := rc_proto.Workflow(rc_proto.Workflow_MANUAL)
 	myDirsMap := make(map[int]bool)
 	for _, contrib := range contributionsToApply {
 		contribAconfigValueSets := []string{}
@@ -211,8 +211,8 @@ func (config *ReleaseConfig) GenerateReleaseConfig(configs *ReleaseConfigs) erro
 				return fmt.Errorf("Setting value for flag %s not allowed in %s\n", name, value.path)
 			}
 			if isRoot && *fa.FlagDeclaration.Workflow != workflowManual {
-				// The "root" release config can only contain workflow: Workflow_Manual flags.
-				return fmt.Errorf("Setting value for non-Workflow_Manual flag %s is not allowed in %s", name, value.path)
+				// The "root" release config can only contain workflow: MANUAL flags.
+				return fmt.Errorf("Setting value for non-MANUAL flag %s is not allowed in %s", name, value.path)
 			}
 			if err := fa.UpdateValue(*value); err != nil {
 				return err
diff --git a/cmd/release_config/release_config_lib/release_configs.go b/cmd/release_config/release_config_lib/release_configs.go
index 3bffe85f4..c62a78e76 100644
--- a/cmd/release_config/release_config_lib/release_configs.go
+++ b/cmd/release_config/release_config_lib/release_configs.go
@@ -107,7 +107,7 @@ func ReleaseConfigsFactory() (c *ReleaseConfigs) {
 		configDirIndexes:     make(ReleaseConfigDirMap),
 		FilesUsedMap:         make(map[string]bool),
 	}
-	workflowManual := rc_proto.Workflow(rc_proto.Workflow_Workflow_Manual)
+	workflowManual := rc_proto.Workflow(rc_proto.Workflow_MANUAL)
 	releaseAconfigValueSets := FlagArtifact{
 		FlagDeclaration: &rc_proto.FlagDeclaration{
 			Name:        proto.String("RELEASE_ACONFIG_VALUE_SETS"),
diff --git a/cmd/release_config/release_config_proto/build_flags_src.pb.go b/cmd/release_config/release_config_proto/build_flags_src.pb.go
index 1a3fb802d..a53823684 100644
--- a/cmd/release_config/release_config_proto/build_flags_src.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_src.pb.go
@@ -40,28 +40,28 @@ type Workflow int32
 const (
 	Workflow_Workflow_Unspecified Workflow = 0
 	// Boolean value flags that progress from false to true.
-	Workflow_Workflow_Launch Workflow = 1
+	Workflow_LAUNCH Workflow = 1
 	// String value flags that get updated with new version strings to control
 	// prebuilt inclusion.
-	Workflow_Workflow_Prebuilt Workflow = 2
+	Workflow_PREBUILT Workflow = 2
 	// Manually managed outside flags.  These are likely to be found in a
 	// different directory than flags with other workflows.
-	Workflow_Workflow_Manual Workflow = 3
+	Workflow_MANUAL Workflow = 3
 )
 
 // Enum value maps for Workflow.
 var (
 	Workflow_name = map[int32]string{
 		0: "Workflow_Unspecified",
-		1: "Workflow_Launch",
-		2: "Workflow_Prebuilt",
-		3: "Workflow_Manual",
+		1: "LAUNCH",
+		2: "PREBUILT",
+		3: "MANUAL",
 	}
 	Workflow_value = map[string]int32{
 		"Workflow_Unspecified": 0,
-		"Workflow_Launch":      1,
-		"Workflow_Prebuilt":    2,
-		"Workflow_Manual":      3,
+		"LAUNCH":               1,
+		"PREBUILT":             2,
+		"MANUAL":               3,
 	}
 )
 
@@ -646,17 +646,15 @@ var file_build_flags_src_proto_rawDesc = []byte{
 	0x52, 0x0b, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x2d, 0x0a,
 	0x12, 0x64, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x5f, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e,
 	0x65, 0x72, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x09, 0x52, 0x11, 0x64, 0x65, 0x66, 0x61, 0x75,
-	0x6c, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x65, 0x72, 0x73, 0x2a, 0x65, 0x0a, 0x08,
+	0x6c, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x65, 0x72, 0x73, 0x2a, 0x4a, 0x0a, 0x08,
 	0x77, 0x6f, 0x72, 0x6b, 0x66, 0x6c, 0x6f, 0x77, 0x12, 0x18, 0x0a, 0x14, 0x57, 0x6f, 0x72, 0x6b,
 	0x66, 0x6c, 0x6f, 0x77, 0x5f, 0x55, 0x6e, 0x73, 0x70, 0x65, 0x63, 0x69, 0x66, 0x69, 0x65, 0x64,
-	0x10, 0x00, 0x12, 0x13, 0x0a, 0x0f, 0x57, 0x6f, 0x72, 0x6b, 0x66, 0x6c, 0x6f, 0x77, 0x5f, 0x4c,
-	0x61, 0x75, 0x6e, 0x63, 0x68, 0x10, 0x01, 0x12, 0x15, 0x0a, 0x11, 0x57, 0x6f, 0x72, 0x6b, 0x66,
-	0x6c, 0x6f, 0x77, 0x5f, 0x50, 0x72, 0x65, 0x62, 0x75, 0x69, 0x6c, 0x74, 0x10, 0x02, 0x12, 0x13,
-	0x0a, 0x0f, 0x57, 0x6f, 0x72, 0x6b, 0x66, 0x6c, 0x6f, 0x77, 0x5f, 0x4d, 0x61, 0x6e, 0x75, 0x61,
-	0x6c, 0x10, 0x03, 0x42, 0x33, 0x5a, 0x31, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73,
-	0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66,
-	0x69, 0x67, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x4c, 0x41, 0x55, 0x4e, 0x43, 0x48, 0x10, 0x01, 0x12, 0x0c,
+	0x0a, 0x08, 0x50, 0x52, 0x45, 0x42, 0x55, 0x49, 0x4c, 0x54, 0x10, 0x02, 0x12, 0x0a, 0x0a, 0x06,
+	0x4d, 0x41, 0x4e, 0x55, 0x41, 0x4c, 0x10, 0x03, 0x42, 0x33, 0x5a, 0x31, 0x61, 0x6e, 0x64, 0x72,
+	0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73,
+	0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65,
+	0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
 }
 
 var (
diff --git a/cmd/release_config/release_config_proto/build_flags_src.proto b/cmd/release_config/release_config_proto/build_flags_src.proto
index 6a8e96eec..cb0d9d9bb 100644
--- a/cmd/release_config/release_config_proto/build_flags_src.proto
+++ b/cmd/release_config/release_config_proto/build_flags_src.proto
@@ -46,15 +46,15 @@ enum workflow {
   Workflow_Unspecified = 0;
 
   // Boolean value flags that progress from false to true.
-  Workflow_Launch = 1;
+  LAUNCH = 1;
 
   // String value flags that get updated with new version strings to control
   // prebuilt inclusion.
-  Workflow_Prebuilt = 2;
+  PREBUILT = 2;
 
   // Manually managed outside flags.  These are likely to be found in a
   // different directory than flags with other workflows.
-  Workflow_Manual = 3;
+  MANUAL = 3;
 }
 
 message value {