diff --git a/scripts/build_broken_logs.go b/scripts/build_broken_logs.go
index f081f26..789afad 100644
--- a/scripts/build_broken_logs.go
+++ b/scripts/build_broken_logs.go
@@ -71,21 +71,12 @@
 	},
 	{
 		name:     "BUILD_BROKEN_ANDROIDMK_EXPORTS",
-		behavior: DefaultFalse,
+		behavior: DefaultDeprecated,
 		warnings: []string{"export_keyword"},
 	},
 	{
-		name:     "BUILD_BROKEN_PHONY_TARGETS",
-		behavior: DefaultFalse,
-		warnings: []string{
-			"depends on PHONY target",
-			"looks like a real file",
-			"writing to readonly directory",
-		},
-	},
-	{
 		name:     "BUILD_BROKEN_ENG_DEBUG_TAGS",
-		behavior: DefaultTrue,
+		behavior: DefaultDeprecated,
 		warnings: []string{
 			"Changes.md#LOCAL_MODULE_TAGS",
 		},
diff --git a/ui/build/config.go b/ui/build/config.go
index 7eb3a72..c298f00 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -53,9 +53,8 @@
 
 	pdkBuild bool
 
-	brokenDupRules     bool
-	brokenPhonyTargets bool
-	brokenUsesNetwork  bool
+	brokenDupRules    bool
+	brokenUsesNetwork bool
 
 	pathReplaced bool
 }
@@ -615,14 +614,6 @@
 	return c.brokenDupRules
 }
 
-func (c *configImpl) SetBuildBrokenPhonyTargets(val bool) {
-	c.brokenPhonyTargets = val
-}
-
-func (c *configImpl) BuildBrokenPhonyTargets() bool {
-	return c.brokenPhonyTargets
-}
-
 func (c *configImpl) SetBuildBrokenUsesNetwork(val bool) {
 	c.brokenUsesNetwork = val
 }
diff --git a/ui/build/dumpvars.go b/ui/build/dumpvars.go
index 7f3426a..8f6e81e 100644
--- a/ui/build/dumpvars.go
+++ b/ui/build/dumpvars.go
@@ -200,9 +200,6 @@
 		// Whether --werror_overriding_commands will work
 		"BUILD_BROKEN_DUP_RULES",
 
-		// Used to turn on --werror_ options in Kati
-		"BUILD_BROKEN_PHONY_TARGETS",
-
 		// Whether to enable the network during the build
 		"BUILD_BROKEN_USES_NETWORK",
 
@@ -276,6 +273,5 @@
 
 	config.SetPdkBuild(make_vars["TARGET_BUILD_PDK"] == "true")
 	config.SetBuildBrokenDupRules(make_vars["BUILD_BROKEN_DUP_RULES"] == "true")
-	config.SetBuildBrokenPhonyTargets(make_vars["BUILD_BROKEN_PHONY_TARGETS"] == "true")
 	config.SetBuildBrokenUsesNetwork(make_vars["BUILD_BROKEN_USES_NETWORK"] == "true")
 }
diff --git a/ui/build/kati.go b/ui/build/kati.go
index 959d0bd..5ad966a 100644
--- a/ui/build/kati.go
+++ b/ui/build/kati.go
@@ -81,6 +81,9 @@
 		"--werror_suffix_rules",
 		"--warn_real_to_phony",
 		"--warn_phony_looks_real",
+		"--werror_real_to_phony",
+		"--werror_phony_looks_real",
+		"--werror_writable",
 		"--top_level_phony",
 		"--kati_stats",
 	}, args...)
@@ -138,13 +141,6 @@
 		args = append(args, "--werror_overriding_commands")
 	}
 
-	if !config.BuildBrokenPhonyTargets() {
-		args = append(args,
-			"--werror_real_to_phony",
-			"--werror_phony_looks_real",
-			"--werror_writable")
-	}
-
 	args = append(args, config.KatiArgs()...)
 
 	args = append(args,
@@ -162,11 +158,8 @@
 
 	args := []string{
 		"--writable", config.DistDir() + "/",
-		"--werror_writable",
 		"--werror_implicit_rules",
 		"--werror_overriding_commands",
-		"--werror_real_to_phony",
-		"--werror_phony_looks_real",
 		"-f", "build/make/packaging/main.mk",
 		"KATI_PACKAGE_MK_DIR=" + config.KatiPackageMkDir(),
 	}
@@ -202,11 +195,8 @@
 	defer ctx.EndTrace()
 
 	runKati(ctx, config, katiCleanspecSuffix, []string{
-		"--werror_writable",
 		"--werror_implicit_rules",
 		"--werror_overriding_commands",
-		"--werror_real_to_phony",
-		"--werror_phony_looks_real",
 		"-f", "build/make/core/cleanbuild.mk",
 		"SOONG_MAKEVARS_MK=" + config.SoongMakeVarsMk(),
 		"TARGET_DEVICE_DIR=" + config.TargetDeviceDir(),