diff --git a/CHANGELOG.md b/CHANGELOG.md
index cfccd934c..c87f81f4b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+* Fixed bug of duplicate histogram calculation ([#905](https://github.com/CARTAvis/carta-backend/pull/905)).
+
 ## [3.0.0-beta.1b]
 
 ### Fixed
diff --git a/src/Frame.cc b/src/Frame.cc
index 9c2359142..9f172e022 100644
--- a/src/Frame.cc
+++ b/src/Frame.cc
@@ -651,7 +651,7 @@ bool Frame::SetHistogramRequirements(int region_id, const std::vector<CARTA::Set
     }
 
     if (region_id == IMAGE_REGION_ID) {
-        InitImageHistogramConfigs();
+        _image_histogram_configs.clear();
     } else {
         _cube_histogram_configs.clear();
     }