diff --git a/bundles/io.github.linkedfactory.core/src/main/java/io/github/linkedfactory/core/rdf4j/kvin/query/ParameterScanner.java b/bundles/io.github.linkedfactory.core/src/main/java/io/github/linkedfactory/core/rdf4j/kvin/query/ParameterScanner.java
index 99f6e9c2..cecc75ba 100644
--- a/bundles/io.github.linkedfactory.core/src/main/java/io/github/linkedfactory/core/rdf4j/kvin/query/ParameterScanner.java
+++ b/bundles/io.github.linkedfactory.core/src/main/java/io/github/linkedfactory/core/rdf4j/kvin/query/ParameterScanner.java
@@ -115,8 +115,8 @@ private void processGraphPattern(StatementPattern sp) throws RDF4JException {
 			var index = indexFor(sp.getSubjectVar(), true);
 			index.put(sp.getSubjectVar(), params);
 		} else {
-			if (KVIN.VALUE.equals(pValue)) {
-				// ensure that parameters are created if only kvin:value is present
+			if (KVIN.VALUE.equals(pValue) || KVIN.VALUE_JSON.equals(pValue)) {
+				// ensure that parameters are created if only kvin:value or kivn:valueJson is present
 				createParameters(sp.getSubjectVar());
 			}