diff --git a/public/lib/classes/param.php b/public/lib/classes/param.php
index 96c6eaf9fe2..ab936c0de5b 100644
--- a/public/lib/classes/param.php
+++ b/public/lib/classes/param.php
@@ -615,6 +615,10 @@ enum param: string {
             } else if (!is_numeric($param) || !preg_match('/^[\+-]?[0-9]*\.?[0-9]*(e[-+]?[0-9]+)?$/i', (string)$param)) {
                 throw new invalid_parameter_exception($debuginfo);
             }
+        } else if ($this->canonical() === self::BOOL) {
+            if ($param != $cleaned) {
+                throw new invalid_parameter_exception($debuginfo);
+            }
         } else if ((string) $param !== (string) $cleaned) {
             // Conversion to string is usually lossless.
             throw new invalid_parameter_exception($debuginfo);
diff --git a/public/lib/tests/moodlelib_test.php b/public/lib/tests/moodlelib_test.php
index c839504643d..f58fd1e5c89 100644
--- a/public/lib/tests/moodlelib_test.php
+++ b/public/lib/tests/moodlelib_test.php
@@ -421,6 +421,17 @@ final class moodlelib_test extends \advanced_testcase {
         $this->assertSame('', clean_param(null, PARAM_ALPHAEXT));
     }
 
+    /**
+     * @covers \core\param
+     * @covers \clean_param
+     */
+    public function test_clean_param_bool(): void {
+        $this->assertSame(0, clean_param(false, PARAM_BOOL));
+        $this->assertSame(0, clean_param(0, PARAM_BOOL));
+        $this->assertSame(1, clean_param(true, PARAM_BOOL));
+        $this->assertSame(1, clean_param(1, PARAM_BOOL));
+    }
+
     /**
      * @covers \core\param
      * @covers \clean_param
@@ -948,6 +959,12 @@ final class moodlelib_test extends \advanced_testcase {
         validate_param('.1e+10', PARAM_FLOAT);
         validate_param('1E-1', PARAM_FLOAT);
 
+        // Make sure bools do not cause exceptions.
+        validate_param(false, PARAM_BOOL);
+        validate_param(0, PARAM_BOOL);
+        validate_param(true, PARAM_BOOL);
+        validate_param(1, PARAM_BOOL);
+
         try {
             $param = validate_param('1,2', PARAM_FLOAT);
             $this->fail('invalid_parameter_exception expected');