diff --git a/src/shapes-graph.js b/src/shapes-graph.js
index 46e6ef3..270067b 100644
--- a/src/shapes-graph.js
+++ b/src/shapes-graph.js
@@ -20,7 +20,7 @@ import NodeSet from './node-set.js'
 import ValidationFunction from './validation-function.js'
 import validatorsRegistry from './validators-registry.js'
 import { extractPropertyPath, getPathObjects } from './property-path.js'
-import { getInstancesOf, isInstanceOf } from './dataset-utils.js'
+import { getInstancesOf, isInstanceOf, rdfListToArray } from './dataset-utils.js'
 
 class ShapesGraph {
   constructor(context) {
@@ -124,6 +124,14 @@ class Constraint {
   get componentMessages() {
     return this.component.getMessages(this.shape)
   }
+
+  get nodeSet() {
+    const { sh } = this.shape.context.ns
+    if (!this.inNodeSet) {
+      this.inNodeSet = new NodeSet(rdfListToArray(this.shapeNodePointer.out(sh.in)))
+    }
+    return this.inNodeSet
+  }
 }
 
 class ConstraintComponent {
diff --git a/src/validators.js b/src/validators.js
index ca376a5..918206d 100644
--- a/src/validators.js
+++ b/src/validators.js
@@ -131,14 +131,7 @@ function validateHasValueProperty(context, focusNode, valueNode, constraint) {
 }
 
 function validateIn(context, focusNode, valueNode, constraint) {
-  const { sh } = context.ns
-  if (!constraint.nodeSet) {
-    const inNode = constraint.getParameterValue(sh.in)
-    constraint.nodeSet = new NodeSet(rdfListToArray(context.$shapes.node(inNode)))
-  }
-  const { nodeSet } = constraint
-
-  return nodeSet.has(valueNode)
+  return constraint.nodeSet.has(valueNode)
 }
 
 function validateLanguageIn(context, focusNode, valueNode, constraint) {
diff --git a/test/data/validation-sourceShape/mandatory-list.ttl b/test/data/validation-sourceShape/mandatory-list.ttl
new file mode 100644
index 0000000..43f6d3a
--- /dev/null
+++ b/test/data/validation-sourceShape/mandatory-list.ttl
@@ -0,0 +1,11 @@
+@prefix sh: <http://www.w3.org/ns/shacl#> .
+@prefix ex: <http://example.com/> .
+
+ex:p1 a ex:Person .
+
+ex:shape sh:targetClass ex:Person ;
+  sh:property [
+    sh:path ex:category ;
+    sh:minCount 1 ;
+    sh:in (1 2 3) ;
+  ] .
\ No newline at end of file
diff --git a/test/validation_sourceShape_test.js b/test/validation_sourceShape_test.js
index 691f593..d829371 100644
--- a/test/validation_sourceShape_test.js
+++ b/test/validation_sourceShape_test.js
@@ -2,8 +2,10 @@
 import path from 'path'
 import assert from 'assert'
 import * as url from 'url'
+import clownface from 'clownface'
 import SHACLValidator from '../index.js'
 import ns from '../src/namespaces.js'
+import { rdfListToArray } from '../src/dataset-utils.js'
 import { loadDataset } from './utils.js'
 
 const { rdfs, sh } = ns
@@ -30,4 +32,21 @@ describe('validation source shapes', () => {
     const [comment] = report.dataset.match(shape, rdfs.comment, null)
     assert.strictEqual(comment.object.value, 'sh:in has 5 elements and has been removed from the report for brevity. Please refer the original shape')
   })
+  it('Includes source shape with list', async () => {
+    const dataPath = path.join(rootPath, 'mandatory-list.ttl')
+    const data = await loadDataset(dataPath)
+    const shapes = data
+
+    const validator = new SHACLValidator(shapes)
+    const report = validator.validate(data)
+
+    assert.strictEqual(report.results.length, 1)
+    const sourceShapes = new Set(report.results.map(result => result.sourceShape))
+    assert.strictEqual(sourceShapes.size, 1)
+    const [shape] = sourceShapes
+    // the shape has the lst of allowed values even though the violated constraint is sh:minCount and not sh:in
+    const list = clownface({ dataset: report.dataset, term: shape }).out(sh.in)
+    const actual = rdfListToArray(list).map(term => term.value)
+    assert.deepEqual(actual, ['1', '2', '3'])
+  })
 })