diff --git a/android/apex_test.go b/android/apex_test.go
index 512b50f..1f786e6 100644
--- a/android/apex_test.go
+++ b/android/apex_test.go
@@ -20,6 +20,10 @@
 )
 
 func Test_mergeApexVariations(t *testing.T) {
+	const (
+		ForPrebuiltApex    = true
+		NotForPrebuiltApex = false
+	)
 	tests := []struct {
 		name        string
 		in          []ApexInfo
@@ -29,10 +33,10 @@
 		{
 			name: "single",
 			in: []ApexInfo{
-				{"foo", "current", false, nil, []string{"foo"}, nil},
+				{"foo", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000", "current", false, nil, []string{"foo"}, nil},
+				{"apex10000", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
 			},
 			wantAliases: [][2]string{
 				{"foo", "apex10000"},
@@ -41,11 +45,11 @@
 		{
 			name: "merge",
 			in: []ApexInfo{
-				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil},
-				{"bar", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar"}, nil},
+				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil, NotForPrebuiltApex},
+				{"bar", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar"}, nil, NotForPrebuiltApex},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar", "foo"}, nil}},
+				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar", "foo"}, nil, false}},
 			wantAliases: [][2]string{
 				{"bar", "apex10000_baz_1"},
 				{"foo", "apex10000_baz_1"},
@@ -54,12 +58,12 @@
 		{
 			name: "don't merge version",
 			in: []ApexInfo{
-				{"foo", "current", false, nil, []string{"foo"}, nil},
-				{"bar", "30", false, nil, []string{"bar"}, nil},
+				{"foo", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
+				{"bar", "30", false, nil, []string{"bar"}, nil, NotForPrebuiltApex},
 			},
 			wantMerged: []ApexInfo{
-				{"apex30", "30", false, nil, []string{"bar"}, nil},
-				{"apex10000", "current", false, nil, []string{"foo"}, nil},
+				{"apex30", "30", false, nil, []string{"bar"}, nil, NotForPrebuiltApex},
+				{"apex10000", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex30"},
@@ -69,11 +73,11 @@
 		{
 			name: "merge updatable",
 			in: []ApexInfo{
-				{"foo", "current", false, nil, []string{"foo"}, nil},
-				{"bar", "current", true, nil, []string{"bar"}, nil},
+				{"foo", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
+				{"bar", "current", true, nil, []string{"bar"}, nil, NotForPrebuiltApex},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000", "current", true, nil, []string{"bar", "foo"}, nil},
+				{"apex10000", "current", true, nil, []string{"bar", "foo"}, nil, NotForPrebuiltApex},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex10000"},
@@ -83,19 +87,38 @@
 		{
 			name: "don't merge sdks",
 			in: []ApexInfo{
-				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil},
-				{"bar", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}, nil},
+				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil, NotForPrebuiltApex},
+				{"bar", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}, nil, NotForPrebuiltApex},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000_baz_2", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}, nil},
-				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil},
+				{"apex10000_baz_2", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}, nil, NotForPrebuiltApex},
+				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}, nil, NotForPrebuiltApex},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex10000_baz_2"},
 				{"foo", "apex10000_baz_1"},
 			},
 		},
+		{
+			name: "don't merge when for prebuilt_apex",
+			in: []ApexInfo{
+				{"foo", "current", false, nil, []string{"foo"}, nil, NotForPrebuiltApex},
+				{"bar", "current", true, nil, []string{"bar"}, nil, NotForPrebuiltApex},
+				// This one should not be merged in with the others because it is for
+				// a prebuilt_apex.
+				{"baz", "current", true, nil, []string{"baz"}, nil, ForPrebuiltApex},
+			},
+			wantMerged: []ApexInfo{
+				{"apex10000", "current", true, nil, []string{"bar", "foo"}, nil, NotForPrebuiltApex},
+				{"baz", "current", true, nil, []string{"baz"}, nil, ForPrebuiltApex},
+			},
+			wantAliases: [][2]string{
+				{"bar", "apex10000"},
+				{"foo", "apex10000"},
+			},
+		},
 	}
+
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			config := TestConfig(buildDir, nil, "", nil)