diff --git a/java/aar.go b/java/aar.go
index eba8a41..6261f29 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -29,8 +29,8 @@
 )
 
 type AndroidLibraryDependency interface {
-	LibraryDependency
 	ExportPackage() android.Path
+	ExportedProguardFlagFiles() android.Paths
 	ExportedRRODirs() []rroDir
 	ExportedStaticPackages() android.Paths
 	ExportedManifests() android.Paths
@@ -498,7 +498,8 @@
 
 	aarFile android.WritablePath
 
-	exportedStaticPackages android.Paths
+	exportedProguardFlagFiles android.Paths
+	exportedStaticPackages    android.Paths
 }
 
 var _ android.OutputFileProducer = (*AndroidLibrary)(nil)
@@ -513,6 +514,10 @@
 	}
 }
 
+func (a *AndroidLibrary) ExportedProguardFlagFiles() android.Paths {
+	return a.exportedProguardFlagFiles
+}
+
 func (a *AndroidLibrary) ExportedStaticPackages() android.Paths {
 	return a.exportedStaticPackages
 }
@@ -561,16 +566,13 @@
 	a.exportedProguardFlagFiles = append(a.exportedProguardFlagFiles,
 		android.PathsForModuleSrc(ctx, a.dexProperties.Optimize.Proguard_flags_files)...)
 	ctx.VisitDirectDeps(func(m android.Module) {
-		if ctx.OtherModuleDependencyTag(m) == staticLibTag {
-			if lib, ok := m.(LibraryDependency); ok {
-				a.exportedProguardFlagFiles = append(a.exportedProguardFlagFiles, lib.ExportedProguardFlagFiles()...)
-			}
-			if alib, ok := m.(AndroidLibraryDependency); ok {
-				a.exportedStaticPackages = append(a.exportedStaticPackages, alib.ExportPackage())
-				a.exportedStaticPackages = append(a.exportedStaticPackages, alib.ExportedStaticPackages()...)
-			}
+		if lib, ok := m.(AndroidLibraryDependency); ok && ctx.OtherModuleDependencyTag(m) == staticLibTag {
+			a.exportedProguardFlagFiles = append(a.exportedProguardFlagFiles, lib.ExportedProguardFlagFiles()...)
+			a.exportedStaticPackages = append(a.exportedStaticPackages, lib.ExportPackage())
+			a.exportedStaticPackages = append(a.exportedStaticPackages, lib.ExportedStaticPackages()...)
 		}
 	})
+
 	a.exportedProguardFlagFiles = android.FirstUniquePaths(a.exportedProguardFlagFiles)
 	a.exportedStaticPackages = android.FirstUniquePaths(a.exportedStaticPackages)
 
diff --git a/java/app.go b/java/app.go
index 4f2df50..bbd9d2d 100755
--- a/java/app.go
+++ b/java/app.go
@@ -457,7 +457,7 @@
 func (a *AndroidApp) proguardBuildActions(ctx android.ModuleContext) {
 	var staticLibProguardFlagFiles android.Paths
 	ctx.VisitDirectDeps(func(m android.Module) {
-		if lib, ok := m.(LibraryDependency); ok && ctx.OtherModuleDependencyTag(m) == staticLibTag {
+		if lib, ok := m.(AndroidLibraryDependency); ok && ctx.OtherModuleDependencyTag(m) == staticLibTag {
 			staticLibProguardFlagFiles = append(staticLibProguardFlagFiles, lib.ExportedProguardFlagFiles()...)
 		}
 	})
diff --git a/java/dex_test.go b/java/dex_test.go
index fc6cd0f..6617873 100644
--- a/java/dex_test.go
+++ b/java/dex_test.go
@@ -155,57 +155,3 @@
 	android.AssertStringDoesNotContain(t, "expected no  static_lib header jar in foo javac classpath",
 		fooD8.Args["d8Flags"], staticLibHeader.String())
 }
-
-func TestProguardFlagsInheritance(t *testing.T) {
-	result := PrepareForTestWithJavaDefaultModulesWithoutFakeDex2oatd.RunTestWithBp(t, `
-		android_app {
-			name: "app",
-			static_libs: [
-				"primary_android_lib",
-				"primary_lib",
-			],
-			platform_apis: true,
-		}
-
-		java_library {
-			name: "primary_lib",
-			optimize: {
-				proguard_flags_files: ["primary.flags"],
-			},
-		}
-
-		android_library {
-			name: "primary_android_lib",
-			static_libs: ["secondary_lib"],
-			optimize: {
-				proguard_flags_files: ["primary_android.flags"],
-			},
-		}
-
-		java_library {
-			name: "secondary_lib",
-			static_libs: ["tertiary_lib"],
-			optimize: {
-				proguard_flags_files: ["secondary.flags"],
-			},
-		}
-
-		java_library {
-			name: "tertiary_lib",
-			optimize: {
-				proguard_flags_files: ["tertiary.flags"],
-			},
-		}
-	`)
-
-	app := result.ModuleForTests("app", "android_common")
-	appR8 := app.Rule("r8")
-	android.AssertStringDoesContain(t, "expected primary_lib's proguard flags from direct dep",
-		appR8.Args["r8Flags"], "primary.flags")
-	android.AssertStringDoesContain(t, "expected primary_android_lib's proguard flags from direct dep",
-		appR8.Args["r8Flags"], "primary_android.flags")
-	android.AssertStringDoesContain(t, "expected secondary_lib's proguard flags from inherited dep",
-		appR8.Args["r8Flags"], "secondary.flags")
-	android.AssertStringDoesContain(t, "expected tertiary_lib's proguard flags from inherited dep",
-		appR8.Args["r8Flags"], "tertiary.flags")
-}
diff --git a/java/java.go b/java/java.go
index 9591846..5091d26 100644
--- a/java/java.go
+++ b/java/java.go
@@ -283,11 +283,6 @@
 	ClassLoaderContexts() dexpreopt.ClassLoaderContextMap
 }
 
-// Provides transitive Proguard flag files to downstream DEX jars.
-type LibraryDependency interface {
-	ExportedProguardFlagFiles() android.Paths
-}
-
 // TODO(jungjw): Move this to kythe.go once it's created.
 type xref interface {
 	XrefJavaFiles() android.Paths
@@ -590,17 +585,9 @@
 type Library struct {
 	Module
 
-	exportedProguardFlagFiles android.Paths
-
 	InstallMixin func(ctx android.ModuleContext, installPath android.Path) (extraInstallDeps android.Paths)
 }
 
-var _ LibraryDependency = (*Library)(nil)
-
-func (j *Library) ExportedProguardFlagFiles() android.Paths {
-	return j.exportedProguardFlagFiles
-}
-
 var _ android.ApexModule = (*Library)(nil)
 
 // Provides access to the list of permitted packages from apex boot jars.
@@ -696,15 +683,6 @@
 		}
 		j.installFile = ctx.InstallFile(installDir, j.Stem()+".jar", j.outputFile, extraInstallDeps...)
 	}
-
-	j.exportedProguardFlagFiles = append(j.exportedProguardFlagFiles,
-		android.PathsForModuleSrc(ctx, j.dexProperties.Optimize.Proguard_flags_files)...)
-	ctx.VisitDirectDeps(func(m android.Module) {
-		if lib, ok := m.(LibraryDependency); ok && ctx.OtherModuleDependencyTag(m) == staticLibTag {
-			j.exportedProguardFlagFiles = append(j.exportedProguardFlagFiles, lib.ExportedProguardFlagFiles()...)
-		}
-	})
-	j.exportedProguardFlagFiles = android.FirstUniquePaths(j.exportedProguardFlagFiles)
 }
 
 func (j *Library) DepsMutator(ctx android.BottomUpMutatorContext) {