diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 6b05ccbd..e3a62a7c 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -1830,11 +1830,9 @@ getJasmineRequireObj().Env = function(j$) {
       }
     }
 
-    function ensureNonParallelOrInDescribe(method) {
+    function ensureNonParallelOrInDescribe(msg) {
       if (parallelLoadingState && !suiteBuilder.inDescribe()) {
-        throw new Error(
-          `In parallel mode, '${method}' must be in a describe block`
-        );
+        throw new Error(msg);
       }
     }
 
@@ -1987,7 +1985,13 @@ getJasmineRequireObj().Env = function(j$) {
 
     this.beforeAll = function(beforeAllFunction, timeout) {
       ensureIsNotNested('beforeAll');
-      ensureNonParallelOrInDescribe('beforeAll');
+      // This message is -npm-specific, but currently parallel operation is
+      // only supported via -npm.
+      ensureNonParallelOrInDescribe(
+        "In parallel mode, 'beforeAll' " +
+          'must be in a describe block. Use the globalSetup config ' +
+          'property for exactly-once setup in parallel mode.'
+      );
       suiteBuilder.beforeAll(beforeAllFunction, timeout);
     };
 
@@ -1999,7 +2003,13 @@ getJasmineRequireObj().Env = function(j$) {
 
     this.afterAll = function(afterAllFunction, timeout) {
       ensureIsNotNested('afterAll');
-      ensureNonParallelOrInDescribe('afterAll');
+      // This message is -npm-specific, but currently parallel operation is
+      // only supported via -npm.
+      ensureNonParallelOrInDescribe(
+        "In parallel mode, 'afterAll' " +
+          'must be in a describe block. Use the globalTeardown config ' +
+          'property for exactly-once teardown in parallel mode.'
+      );
       suiteBuilder.afterAll(afterAllFunction, timeout);
     };
 
diff --git a/spec/core/EnvSpec.js b/spec/core/EnvSpec.js
index 8243f452..2039fa03 100644
--- a/spec/core/EnvSpec.js
+++ b/spec/core/EnvSpec.js
@@ -1,6 +1,5 @@
 // TODO: Fix these unit tests!
 describe('Env', function() {
-  beforeAll(function() {});
   let env;
   beforeEach(function() {
     env = new jasmineUnderTest.Env();
@@ -480,7 +479,9 @@ describe('Env', function() {
           expect(function() {
             env.beforeAll(function() {});
           }).toThrowError(
-            "In parallel mode, 'beforeAll' must be in a describe block"
+            "In parallel mode, 'beforeAll' must be in a describe block. " +
+              'Use the globalSetup config property for exactly-once setup in' +
+              ' parallel mode.'
           );
         }
       });
@@ -585,7 +586,9 @@ describe('Env', function() {
           expect(function() {
             env.afterAll(function() {});
           }).toThrowError(
-            "In parallel mode, 'afterAll' must be in a describe block"
+            "In parallel mode, 'afterAll' must be in a describe block. " +
+              'Use the globalTeardown config property for exactly-once ' +
+              'teardown in parallel mode.'
           );
         }
       });
diff --git a/src/core/Env.js b/src/core/Env.js
index 67e680b1..9a08c9f1 100644
--- a/src/core/Env.js
+++ b/src/core/Env.js
@@ -688,11 +688,9 @@ getJasmineRequireObj().Env = function(j$) {
       }
     }
 
-    function ensureNonParallelOrInDescribe(method) {
+    function ensureNonParallelOrInDescribe(msg) {
       if (parallelLoadingState && !suiteBuilder.inDescribe()) {
-        throw new Error(
-          `In parallel mode, '${method}' must be in a describe block`
-        );
+        throw new Error(msg);
       }
     }
 
@@ -845,7 +843,13 @@ getJasmineRequireObj().Env = function(j$) {
 
     this.beforeAll = function(beforeAllFunction, timeout) {
       ensureIsNotNested('beforeAll');
-      ensureNonParallelOrInDescribe('beforeAll');
+      // This message is -npm-specific, but currently parallel operation is
+      // only supported via -npm.
+      ensureNonParallelOrInDescribe(
+        "In parallel mode, 'beforeAll' " +
+          'must be in a describe block. Use the globalSetup config ' +
+          'property for exactly-once setup in parallel mode.'
+      );
       suiteBuilder.beforeAll(beforeAllFunction, timeout);
     };
 
@@ -857,7 +861,13 @@ getJasmineRequireObj().Env = function(j$) {
 
     this.afterAll = function(afterAllFunction, timeout) {
       ensureIsNotNested('afterAll');
-      ensureNonParallelOrInDescribe('afterAll');
+      // This message is -npm-specific, but currently parallel operation is
+      // only supported via -npm.
+      ensureNonParallelOrInDescribe(
+        "In parallel mode, 'afterAll' " +
+          'must be in a describe block. Use the globalTeardown config ' +
+          'property for exactly-once teardown in parallel mode.'
+      );
       suiteBuilder.afterAll(afterAllFunction, timeout);
     };