diff --git a/framework-docs/modules/ROOT/pages/core/aop/ataspectj/advice.adoc b/framework-docs/modules/ROOT/pages/core/aop/ataspectj/advice.adoc
index 94adb81696..30f2bc8dc0 100644
--- a/framework-docs/modules/ROOT/pages/core/aop/ataspectj/advice.adoc
+++ b/framework-docs/modules/ROOT/pages/core/aop/ataspectj/advice.adoc
@@ -176,7 +176,7 @@ Kotlin::
 		@AfterReturning(
 			pointcut = "execution(* com.xyz.dao.*.*(..))",
 			returning = "retVal")
-		fun doAccessCheck(retVal: Any) {
+		fun doAccessCheck(retVal: Any?) {
 			// ...
 		}
 	}
@@ -448,7 +448,7 @@ Kotlin::
 	class AroundExample {
 
 		@Around("execution(* com.xyz..service.*.*(..))")
-		fun doBasicProfiling(pjp: ProceedingJoinPoint): Any {
+		fun doBasicProfiling(pjp: ProceedingJoinPoint): Any? {
 			// start stopwatch
 			val retVal = pjp.proceed()
 			// stop stopwatch
@@ -888,7 +888,7 @@ Kotlin::
 			"com.xyz.CommonPointcuts.inDataAccessLayer() && " +
 			"args(accountHolderNamePattern)") // <1>
 	fun preProcessQueryPattern(pjp: ProceedingJoinPoint,
-							accountHolderNamePattern: String): Any {
+							accountHolderNamePattern: String): Any? {
 		val newPattern = preProcess(accountHolderNamePattern)
 		return pjp.proceed(arrayOf<Any>(newPattern))
 	}
diff --git a/framework-docs/modules/ROOT/pages/core/aop/ataspectj/example.adoc b/framework-docs/modules/ROOT/pages/core/aop/ataspectj/example.adoc
index 03cb9d102e..896086c928 100644
--- a/framework-docs/modules/ROOT/pages/core/aop/ataspectj/example.adoc
+++ b/framework-docs/modules/ROOT/pages/core/aop/ataspectj/example.adoc
@@ -85,7 +85,7 @@ Kotlin::
 		}
 
 		@Around("com.xyz.CommonPointcuts.businessService()") // <1>
-		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 			var numAttempts = 0
 			var lockFailureException: PessimisticLockingFailureException
 			do {
@@ -173,7 +173,7 @@ Kotlin::
 ----
 	@Around("execution(* com.xyz..service.*.*(..)) && " +
 			"@annotation(com.xyz.service.Idempotent)")
-	fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+	fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 		// ...
 	}
 ----
diff --git a/framework-docs/modules/ROOT/pages/core/aop/schema.adoc b/framework-docs/modules/ROOT/pages/core/aop/schema.adoc
index fd19d9ecc6..c51ad3e976 100644
--- a/framework-docs/modules/ROOT/pages/core/aop/schema.adoc
+++ b/framework-docs/modules/ROOT/pages/core/aop/schema.adoc
@@ -435,7 +435,7 @@ Kotlin::
 +
 [source,kotlin,indent=0,subs="verbatim",role="secondary"]
 ----
-	fun doBasicProfiling(pjp: ProceedingJoinPoint): Any {
+	fun doBasicProfiling(pjp: ProceedingJoinPoint): Any? {
 		// start stopwatch
 		val retVal = pjp.proceed()
 		// stop stopwatch
@@ -554,7 +554,7 @@ Kotlin::
 
 	class SimpleProfiler {
 
-		fun profile(call: ProceedingJoinPoint, name: String, age: Int): Any {
+		fun profile(call: ProceedingJoinPoint, name: String, age: Int): Any? {
 			val clock = StopWatch("Profiling for '$name' and '$age'")
 			try {
 				clock.start(call.toShortString())
@@ -890,7 +890,7 @@ Kotlin::
 			this.order = order
 		}
 
-		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any {
+		fun doConcurrentOperation(pjp: ProceedingJoinPoint): Any? {
 			var numAttempts = 0
 			var lockFailureException: PessimisticLockingFailureException
 			do {
diff --git a/framework-docs/modules/ROOT/pages/core/aop/using-aspectj.adoc b/framework-docs/modules/ROOT/pages/core/aop/using-aspectj.adoc
index 10fdac6dca..f9b6b39887 100644
--- a/framework-docs/modules/ROOT/pages/core/aop/using-aspectj.adoc
+++ b/framework-docs/modules/ROOT/pages/core/aop/using-aspectj.adoc
@@ -493,7 +493,7 @@ Kotlin::
 	class ProfilingAspect {
 
 		@Around("methodsToBeProfiled()")
-		fun profile(pjp: ProceedingJoinPoint): Any {
+		fun profile(pjp: ProceedingJoinPoint): Any? {
 			val sw = StopWatch(javaClass.simpleName)
 			try {
 				sw.start(pjp.getSignature().getName())