--- a/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/GeckoSessionTestRuleTest.kt
+++ b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/GeckoSessionTestRuleTest.kt
@@ -2,16 +2,17 @@
  * Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 package org.mozilla.geckoview.test
 
 import org.mozilla.geckoview.GeckoSession
 import org.mozilla.geckoview.GeckoSessionSettings
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.AssertCalled
+import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.ChildCrashedException
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.ClosedSessionAtStart
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.IgnoreCrash
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.NullDelegate
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.RejectedPromiseException
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.ReuseSession
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.Setting
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.TimeoutException
 import org.mozilla.geckoview.test.rule.GeckoSessionTestRule.TimeoutMillis
@@ -1659,17 +1660,17 @@ class GeckoSessionTestRuleTest : BaseSes
 
         mainSession.loadUri(CONTENT_CRASH_URL)
         mainSession.waitUntilCalled(object : Callbacks.ContentDelegate {
             @AssertCalled(count = 1)
             override fun onCrash(session: GeckoSession) = Unit
         })
     }
 
-    @Test(expected = RuntimeException::class)
+    @Test(expected = ChildCrashedException::class)
     @ReuseSession(false)
     fun contentCrashFails() {
         assumeThat(sessionRule.env.isMultiprocess, equalTo(true))
         assumeThat(sessionRule.env.shouldShutdownOnCrash(), equalTo(false))
         // Cannot test x86 debug builds due to Gecko's "ah_crap_handler"
         // that waits for debugger to attach during a SIGSEGV.
         assumeThat(sessionRule.env.isDebugBuild && sessionRule.env.cpuArch == "x86",
                    equalTo(false))

--- a/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/rule/GeckoSessionTestRule.java
+++ b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/rule/GeckoSessionTestRule.java
@@ -338,16 +338,22 @@ public class GeckoSessionTestRule extend
     }
 
     public static class TimeoutException extends RuntimeException {
         public TimeoutException(final String detailMessage) {
             super(detailMessage);
         }
     }
 
+    public static class ChildCrashedException extends RuntimeException {
+        public ChildCrashedException(final String detailMessage) {
+            super(detailMessage);
+        }
+    }
+
     public static class RejectedPromiseException extends RuntimeException {
         private final Object mReason;
 
         /* package */ RejectedPromiseException(final Object reason) {
             super(String.valueOf(reason));
             mReason = reason;
         }
 
@@ -1192,17 +1198,17 @@ public class GeckoSessionTestRule extend
                         session = (GeckoSession) args[0];
                     }
 
                     if (sOnCrash.equals(method) && !mIgnoreCrash && isUsingSession(session)) {
                         if (env.shouldShutdownOnCrash()) {
                             sRuntime.shutdown();
                         }
 
-                        throw new RuntimeException("Content process crashed");
+                        throw new ChildCrashedException("Child process crashed");
                     }
 
                     records.add(new CallRecord(session, method, args));
 
                     call = waitDelegates.prepareMethodCall(session, method);
                     if (call == null) {
                         call = testDelegates.prepareMethodCall(session, method);
                     }