diff --git a/CHANGELOG.md b/CHANGELOG.md
index 457c225..f787caf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Fixed
+* fix `wdMismatchFinder` report: suppress empty strings as external value
+
 ## [3.1.0] - 2024-11-12
 
 ### Fixed
diff --git a/abecto-core/src/main/resources/de/uni_jena/cs/fusion/abecto/export/wdMismatchFinder.rq b/abecto-core/src/main/resources/de/uni_jena/cs/fusion/abecto/export/wdMismatchFinder.rq
index b0b61d5..cb85fe8 100644
--- a/abecto-core/src/main/resources/de/uni_jena/cs/fusion/abecto/export/wdMismatchFinder.rq
+++ b/abecto-core/src/main/resources/de/uni_jena/cs/fusion/abecto/export/wdMismatchFinder.rq
@@ -113,4 +113,5 @@ WHERE {
 				av:comparedToResource	?external_urlX .
 		}
 	}
+	FILTER (STR(?external_valueX) != "")
 }