diff --git a/ui/build/config.go b/ui/build/config.go
index 15da1bc8c..1152cd790 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -56,7 +56,6 @@ type configImpl struct {
 	katiSuffix      string
 	targetDevice    string
 	targetDeviceDir string
-	fullBuild       bool
 
 	// Autodetected
 	totalRAM uint64
@@ -792,14 +791,6 @@ func (c *configImpl) SetTargetDevice(device string) {
 	c.targetDevice = device
 }
 
-func (c *configImpl) FullBuild() bool {
-	return c.fullBuild
-}
-
-func (c *configImpl) SetFullBuild(fullBuild bool) {
-	c.fullBuild = fullBuild
-}
-
 func (c *configImpl) TargetBuildVariant() string {
 	if v, ok := c.environ.Get("TARGET_BUILD_VARIANT"); ok {
 		return v
diff --git a/ui/build/dumpvars.go b/ui/build/dumpvars.go
index be6f00a18..fe0aca983 100644
--- a/ui/build/dumpvars.go
+++ b/ui/build/dumpvars.go
@@ -214,9 +214,6 @@ func runMakeProductConfig(ctx Context, config Config) {
 		// So that later Kati runs can find BoardConfig.mk faster
 		"TARGET_DEVICE_DIR",
 
-		// To decide whether to skip the old installed cleanup step.
-		"FULL_BUILD",
-
 		// Whether --werror_overriding_commands will work
 		"BUILD_BROKEN_DUP_RULES",
 
@@ -281,7 +278,6 @@ func runMakeProductConfig(ctx Context, config Config) {
 	config.SetNinjaArgs(strings.Fields(makeVars["NINJA_GOALS"]))
 	config.SetTargetDevice(makeVars["TARGET_DEVICE"])
 	config.SetTargetDeviceDir(makeVars["TARGET_DEVICE_DIR"])
-	config.SetFullBuild(makeVars["FULL_BUILD"] == "true")
 
 	config.SetBuildBrokenDupRules(makeVars["BUILD_BROKEN_DUP_RULES"] == "true")
 	config.SetBuildBrokenUsesNetwork(makeVars["BUILD_BROKEN_USES_NETWORK"] == "true")
diff --git a/ui/build/kati.go b/ui/build/kati.go
index 668b20eed..06ec64607 100644
--- a/ui/build/kati.go
+++ b/ui/build/kati.go
@@ -229,11 +229,7 @@ func runKatiBuild(ctx Context, config Config) {
 
 	// Cleanup steps.
 	cleanCopyHeaders(ctx, config)
-	// Skip the old installed file cleanup step for few non-full build goals as we don't create
-	// an installed file list for them.
-	if config.FullBuild() {
-		cleanOldInstalledFiles(ctx, config)
-	}
+	cleanOldInstalledFiles(ctx, config)
 }
 
 // Clean out obsolete header files on the disk that were *not copied* during the