diff --git a/datamodel/low/extraction_functions.go b/datamodel/low/extraction_functions.go
index 05b55fa..0d0239f 100644
--- a/datamodel/low/extraction_functions.go
+++ b/datamodel/low/extraction_functions.go
@@ -698,6 +698,9 @@ func AreEqual(l, r Hashable) bool {
 // GenerateHashString will generate a SHA36 hash of any object passed in. If the object is Hashable
 // then the underlying Hash() method will be called.
 func GenerateHashString(v any) string {
+	if v == nil {
+		return ""
+	}
 	if h, ok := v.(Hashable); ok {
 		if h != nil {
 			return fmt.Sprintf(HASH, h.Hash())
diff --git a/datamodel/low/extraction_functions_test.go b/datamodel/low/extraction_functions_test.go
index 57ae5c4..77976fe 100644
--- a/datamodel/low/extraction_functions_test.go
+++ b/datamodel/low/extraction_functions_test.go
@@ -1669,6 +1669,12 @@ func TestGenerateHashString(t *testing.T) {
 	assert.Equal(t, "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
 		GenerateHashString("hello"))
 
+	assert.Equal(t, "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+		GenerateHashString(""))
+
+	assert.Equal(t, "",
+		GenerateHashString(nil))
+
 }
 
 func TestGenerateHashString_Pointer(t *testing.T) {