diff --git a/genophenbrowser-shared/src/main/java/com/gmi/nordborglab/browser/shared/proxy/PhenotypeProxy.java b/genophenbrowser-shared/src/main/java/com/gmi/nordborglab/browser/shared/proxy/PhenotypeProxy.java
index 9ce5f2c3..0038a86d 100644
--- a/genophenbrowser-shared/src/main/java/com/gmi/nordborglab/browser/shared/proxy/PhenotypeProxy.java
+++ b/genophenbrowser-shared/src/main/java/com/gmi/nordborglab/browser/shared/proxy/PhenotypeProxy.java
@@ -14,7 +14,6 @@ public interface PhenotypeProxy extends SecureEntityProxy {
 
     Long getId();
 
-    @NotNull
     UnitOfMeasureProxy getUnitOfMeasure();
 
     void setUnitOfMeasure(UnitOfMeasureProxy unitOfMeasure);