diff --git a/src/main/java/com/android/tools/r8/R8.java b/src/main/java/com/android/tools/r8/R8.java
index e767011..f873d6a 100644
--- a/src/main/java/com/android/tools/r8/R8.java
+++ b/src/main/java/com/android/tools/r8/R8.java
@@ -559,7 +559,7 @@
             timing.end();
           }
         }
-        if (options.enableHorizontalClassMerging) {
+        if (options.enableHorizontalClassMerging && options.enableInlining) {
           timing.begin("HorizontalClassMerger");
           HorizontalClassMerger merger =
               new HorizontalClassMerger(
diff --git a/src/test/java/com/android/tools/r8/bridgeremoval/B77836766.java b/src/test/java/com/android/tools/r8/bridgeremoval/B77836766.java
index 09bf5e1..76ebd58 100644
--- a/src/test/java/com/android/tools/r8/bridgeremoval/B77836766.java
+++ b/src/test/java/com/android/tools/r8/bridgeremoval/B77836766.java
@@ -64,7 +64,6 @@
    */
   @Test
   public void test_bridgeTargetInBase_differentBridges() throws Exception {
-    expectThrowsWithHorizontalClassMerging();
     JasminBuilder jasminBuilder = new JasminBuilder();
 
     ClassBuilder absCls = jasminBuilder.addClass("AbsCls");
@@ -186,7 +185,6 @@
    */
   @Test
   public void test_bridgeTargetInBase_bridgeAndNonBridge() throws Exception {
-    expectThrowsWithHorizontalClassMerging();
     JasminBuilder jasminBuilder = new JasminBuilder();
 
     ClassBuilder baseCls = jasminBuilder.addClass("Base");
diff --git a/src/test/java/com/android/tools/r8/shaking/examples/TreeShaking18Test.java b/src/test/java/com/android/tools/r8/shaking/examples/TreeShaking18Test.java
index a1a2748..d91a2fd 100644
--- a/src/test/java/com/android/tools/r8/shaking/examples/TreeShaking18Test.java
+++ b/src/test/java/com/android/tools/r8/shaking/examples/TreeShaking18Test.java
@@ -39,7 +39,6 @@
 
   @Test
   public void test() throws Exception {
-    expectThrowsWithHorizontalClassMerging();
     runTest(
         TreeShaking18Test::unusedRemoved,
         null,
diff --git a/src/test/java/com/android/tools/r8/shaking/examples/TreeShakingAbstractMethodRemovalTest.java b/src/test/java/com/android/tools/r8/shaking/examples/TreeShakingAbstractMethodRemovalTest.java
index a82fede..b008254 100644
--- a/src/test/java/com/android/tools/r8/shaking/examples/TreeShakingAbstractMethodRemovalTest.java
+++ b/src/test/java/com/android/tools/r8/shaking/examples/TreeShakingAbstractMethodRemovalTest.java
@@ -37,7 +37,6 @@
 
   @Test
   public void test() throws Exception {
-    expectThrowsWithHorizontalClassMerging();
     runTest(
         null,
         null,