diff --git a/azurerm/helpers/azure/servicebus.go b/azurerm/helpers/azure/servicebus.go
index 67732ac54d55e..4543948b406f5 100644
--- a/azurerm/helpers/azure/servicebus.go
+++ b/azurerm/helpers/azure/servicebus.go
@@ -28,8 +28,8 @@ func ValidateServiceBusSubscriptionName() schema.SchemaValidateFunc {
 
 func ValidateServiceBusTopicName() schema.SchemaValidateFunc {
 	return validation.StringMatch(
-		regexp.MustCompile("^[a-zA-Z0-9][-._/a-zA-Z0-9]{0,258}[a-zA-Z0-9]$"),
-		"The topic name can contain only letters, numbers, periods, hyphens, slashes and underscores. The namespace must start with a letter or number, and it must end with a letter or number and be less then 260 characters long.",
+		regexp.MustCompile("^[a-zA-Z0-9][-._~a-zA-Z0-9]{0,258}([a-zA-Z0-9])?$"),
+		"The topic name can contain only letters, numbers, periods, hyphens, tildas and underscores. The namespace must start with a letter or number, and it must end with a letter or number and be less then 260 characters long.",
 	)
 }