diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 58887e75..d084a3d9 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -5493,8 +5493,13 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       (!!haystack && !haystack.indexOf)
     ) {
       for (var i = 0; i < haystack.length; i++) {
-        if (this.equals(haystack[i], needle, customTesters)) {
-          return true;
+        try {
+          this.suppressDeprecation_ = true;
+          if (this.equals(haystack[i], needle, customTesters)) {
+            return true;
+          }
+        } finally {
+          this.suppressDeprecation_ = false;
         }
       }
       return false;
@@ -5613,7 +5618,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (isDiffBuilder(customTestersOrDiffBuilder)) {
       diffBuilder = customTestersOrDiffBuilder;
     } else {
-      if (customTestersOrDiffBuilder) {
+      if (customTestersOrDiffBuilder && !this.suppressDeprecation_) {
         j$.getEnv().deprecated(
           'Passing custom equality testers ' +
             'to MatchersUtil#equals is deprecated. ' +
diff --git a/spec/core/matchers/matchersUtilSpec.js b/spec/core/matchers/matchersUtilSpec.js
index 3d86f01d..7fc9fc85 100644
--- a/spec/core/matchers/matchersUtilSpec.js
+++ b/spec/core/matchers/matchersUtilSpec.js
@@ -1235,6 +1235,22 @@ describe('matchersUtil', function() {
       expect(matchersUtil.contains([1, 2], 3)).toBe(true);
     });
 
+    it('logs a single deprecation warning when custom equality testers are passed', function() {
+      // TODO: remove this in the next major release.
+      var matchersUtil = new jasmineUnderTest.MatchersUtil(),
+        deprecated = spyOn(jasmineUnderTest.getEnv(), 'deprecated');
+
+      matchersUtil.contains([0], 0, []);
+
+      expect(deprecated).toHaveBeenCalledOnceWith(
+        jasmine.stringMatching(
+          'Passing custom equality testers ' +
+            'to MatchersUtil#contains is deprecated. ' +
+            'See <https://jasmine.github.io/tutorials/upgrading_to_Jasmine_4.0#matchers-cet> for details.'
+        )
+      );
+    });
+
     it('fails when actual is undefined', function() {
       var matchersUtil = new jasmineUnderTest.MatchersUtil();
       expect(matchersUtil.contains(undefined, 'A')).toBe(false);
diff --git a/src/core/matchers/matchersUtil.js b/src/core/matchers/matchersUtil.js
index bba9797c..f8819549 100644
--- a/src/core/matchers/matchersUtil.js
+++ b/src/core/matchers/matchersUtil.js
@@ -51,8 +51,13 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       (!!haystack && !haystack.indexOf)
     ) {
       for (var i = 0; i < haystack.length; i++) {
-        if (this.equals(haystack[i], needle, customTesters)) {
-          return true;
+        try {
+          this.suppressDeprecation_ = true;
+          if (this.equals(haystack[i], needle, customTesters)) {
+            return true;
+          }
+        } finally {
+          this.suppressDeprecation_ = false;
         }
       }
       return false;
@@ -171,7 +176,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (isDiffBuilder(customTestersOrDiffBuilder)) {
       diffBuilder = customTestersOrDiffBuilder;
     } else {
-      if (customTestersOrDiffBuilder) {
+      if (customTestersOrDiffBuilder && !this.suppressDeprecation_) {
         j$.getEnv().deprecated(
           'Passing custom equality testers ' +
             'to MatchersUtil#equals is deprecated. ' +