diff --git a/packages/knex/src/schema/SchemaComparator.ts b/packages/knex/src/schema/SchemaComparator.ts
index 0223d3517e4f..bf910e773e15 100644
--- a/packages/knex/src/schema/SchemaComparator.ts
+++ b/packages/knex/src/schema/SchemaComparator.ts
@@ -542,6 +542,13 @@ export class SchemaComparator {
       return defaultValueFrom === defaultValueTo;
     }
 
+    if (to.mappedType instanceof JsonType) {
+      const defaultValueFrom = parseJsonSafe(from.default.replace(/^'(.*)'$/, '$1'));
+      const defaultValueTo = parseJsonSafe(to.default?.replace(/^'(.*)'$/, '$1'));
+
+      return Utils.equals(defaultValueFrom, defaultValueTo);
+    }
+
     if (to.mappedType instanceof DateTimeType && from.default && to.default) {
       // normalize now/current_timestamp defaults, also remove `()` from the end of default expression
       const defaultValueFrom = from.default.toLowerCase().replace('current_timestamp', 'now').replace(/\(\)$/, '');
diff --git a/tests/features/schema-generator/__snapshots__/diffing-default-values.test.ts.snap b/tests/features/schema-generator/__snapshots__/diffing-default-values.test.ts.snap
index 5af0fa90e260..3ff175100651 100644
--- a/tests/features/schema-generator/__snapshots__/diffing-default-values.test.ts.snap
+++ b/tests/features/schema-generator/__snapshots__/diffing-default-values.test.ts.snap
@@ -4,7 +4,7 @@ exports[`diffing default values (GH #2385) string defaults do not produce additi
 "set names utf8mb4;
 set foreign_key_checks = 0;
 
-create table \`foo1\` (\`id\` int unsigned not null auto_increment primary key, \`bar0\` varchar(255) not null default 'test', \`bar1\` varchar(255) not null default 'test', \`bar2\` datetime not null default now(), \`bar3\` datetime(6) not null default now(6)) default character set utf8mb4 engine = InnoDB;
+create table \`foo1\` (\`id\` int unsigned not null auto_increment primary key, \`bar0\` varchar(255) not null default 'test', \`bar1\` varchar(255) not null default 'test', \`bar2\` datetime not null default now(), \`bar3\` datetime(6) not null default now(6), \`metadata\` json not null default '{"value":42}') default character set utf8mb4 engine = InnoDB;
 
 set foreign_key_checks = 1;
 "
@@ -14,7 +14,7 @@ exports[`diffing default values (GH #2385) string defaults do not produce additi
 "set names utf8mb4;
 set foreign_key_checks = 0;
 
-create table \`foo1\` (\`id\` int unsigned not null auto_increment primary key, \`bar0\` varchar(255) not null default 'test', \`bar1\` varchar(255) not null default 'test', \`bar2\` datetime not null default now(), \`bar3\` datetime(6) not null default now(6)) default character set utf8mb4 engine = InnoDB;
+create table \`foo0\` (\`id\` int unsigned not null auto_increment primary key, \`bar0\` varchar(255) not null default 'test', \`bar1\` varchar(255) not null default 'test', \`bar2\` datetime not null default now(), \`bar3\` datetime(6) not null default now(6)) default character set utf8mb4 engine = InnoDB;
 
 set foreign_key_checks = 1;
 "
@@ -33,7 +33,7 @@ set session_replication_role = 'origin';
 exports[`diffing default values (GH #2385) string defaults do not produce additional diffs [sqlite] 1`] = `
 "pragma foreign_keys = off;
 
-create table \`foo3\` (\`id\` integer not null primary key autoincrement, \`bar0\` text not null default 'test', \`bar1\` text not null default 'test', \`bar2\` datetime not null default now);
+create table \`foo3\` (\`id\` integer not null primary key autoincrement, \`bar0\` text not null default 'test', \`bar1\` text not null default 'test', \`bar2\` datetime not null default now, \`metadata\` json not null default '{"value":43}');
 
 pragma foreign_keys = on;
 "
diff --git a/tests/features/schema-generator/diffing-default-values.test.ts b/tests/features/schema-generator/diffing-default-values.test.ts
index 6a03ee3fcbc2..5405a6c623ee 100644
--- a/tests/features/schema-generator/diffing-default-values.test.ts
+++ b/tests/features/schema-generator/diffing-default-values.test.ts
@@ -17,6 +17,17 @@ export class Foo {
 
 }
 
+@Entity()
+export class Foo0 extends Foo {
+
+  @Property({ defaultRaw: 'now()' })
+  bar2!: Date;
+
+  @Property({ defaultRaw: 'now(6)', length: 6 })
+  bar3!: Date;
+
+}
+
 @Entity()
 export class Foo1 extends Foo {
 
@@ -26,6 +37,9 @@ export class Foo1 extends Foo {
   @Property({ defaultRaw: 'now(6)', length: 6 })
   bar3!: Date;
 
+  @Property({ type: 'json', default: JSON.stringify({ value: 42 }) })
+  metadata!: any;
+
 }
 
 @Entity()
@@ -37,6 +51,9 @@ export class Foo2 extends Foo {
   @Property({ defaultRaw: 'now()', length: 6 })
   bar3!: Date;
 
+  @Property({ type: 'json', default: JSON.stringify({ value: 42 }) })
+  metadata!: any;
+
 }
 
 @Entity()
@@ -45,13 +62,16 @@ export class Foo3 extends Foo {
   @Property({ defaultRaw: 'now' })
   bar2!: Date;
 
+  @Property({ type: 'json', default: JSON.stringify({ value: 43 }) })
+  metadata!: any;
+
 }
 
 describe('diffing default values (GH #2385)', () => {
 
   test('string defaults do not produce additional diffs [mysql]', async () => {
     const orm = await MikroORM.init({
-      entities: [Foo1],
+      entities: [Foo0],
       dbName: 'mikro_orm_test_gh_2385',
       driver: MySqlDriver,
       port: 3308,