1 files changed, 2 insertions, 0 deletions
diff --git a/java/sca/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ReferenceConfigurationUtil.java b/java/sca/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ReferenceConfigurationUtil.java
index fa5d42a71d..8f2c5be5dc 100644
--- a/java/sca/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ReferenceConfigurationUtil.java
+++ b/java/sca/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ReferenceConfigurationUtil.java
@@ -69,6 +69,8 @@ abstract class ReferenceConfigurationUtil {
                     return overridenMul == Multiplicity.ZERO_ONE;
                 case ONE_N:
                     return overridenMul == Multiplicity.ONE_ONE;
+                case ZERO_ONE:
+                    return overridenMul == Multiplicity.ONE_ONE;
                 default:
                     return false;
             }