diff --git a/src/main/java/dgpena/siexample/persistence/ProjectAssignment.java b/src/main/java/dgpena/siexample/persistence/ProjectAssignment.java
index 10855d7c1895817f80b53131c3e346165cb775cf..ec54ab7bdb20491e3d30673242270ed2942126ba 100644
--- a/src/main/java/dgpena/siexample/persistence/ProjectAssignment.java
+++ b/src/main/java/dgpena/siexample/persistence/ProjectAssignment.java
@@ -34,14 +34,13 @@ public class ProjectAssignment {
 	
 	public void setProject(Project project) {
 		if (this.project != null) {
-			project.internalRemoveProjectAssignment(this);
+			this.project.internalRemoveProjectAssignment(this);
 		}
 		this.project = project;
 		
 		if (this.project != null) {
 			this.project.internalAddProjectAssignment(this);
 		}
-		this.project = project;
 	}
 	
 	public void setEmployee(Employee employee) {