diff --git a/rest-api/src/main/java/lcsb/mapviewer/api/projects/ProjectRestImpl.java b/rest-api/src/main/java/lcsb/mapviewer/api/projects/ProjectRestImpl.java
index 34bdb657aa18d6c5aab258d84212fcef9320472e..fd0e399b6305c9b16ae808e836035092b4199dac 100644
--- a/rest-api/src/main/java/lcsb/mapviewer/api/projects/ProjectRestImpl.java
+++ b/rest-api/src/main/java/lcsb/mapviewer/api/projects/ProjectRestImpl.java
@@ -409,36 +409,39 @@ public class ProjectRestImpl extends BaseRestImpl {
 			throw new SecurityException("You cannot update projects");
 		}
 		Set<String> fields = data.keySet();
-		for (String string : fields) {
-			if (string.equalsIgnoreCase("version")) {
-				project.setVersion((String) data.get(string));
-			} else if (string.equalsIgnoreCase("id")) {
+		for (String fieldName : fields) {
+			Object value = data.get(fieldName);
+			String stringValue = null;
+			if (value instanceof String) {
+				stringValue = (String) value;
+			}
+			if (fieldName.equalsIgnoreCase("version")) {
+				project.setVersion((String) value);
+			} else if (fieldName.equalsIgnoreCase("id")) {
 				try {
-					int id = Integer.parseInt(string);
+					int id = Integer.parseInt(stringValue);
 					if (id != project.getId()) {
-						throw new QueryException("Invalid id: " + string);
+						throw new QueryException("Invalid id: " + stringValue);
 					}
 				} catch (NumberFormatException e) {
-					throw new QueryException("Invalid id: " + string);
+					throw new QueryException("Invalid id: " + stringValue);
 				}
-			} else if (string.equalsIgnoreCase("projectId")) {
-				if (!project.getProjectId().equalsIgnoreCase(string)) {
+			} else if (fieldName.equalsIgnoreCase("projectId")) {
+				if (!project.getProjectId().equalsIgnoreCase(stringValue)) {
 					throw new QueryException("You cannot modify projectId");
 				}
-			} else if (string.equalsIgnoreCase("name")) {
-				project.setName((String) data.get(string));
-			} else if (string.equalsIgnoreCase("notifyEmail")) {
-				project.setNotifyEmail((String) data.get(string));
-			} else if (string.equalsIgnoreCase("organism")) {
-				Object res = data.get(string);
-				MiriamData organism = updateMiriamData(project.getOrganism(), res);
+			} else if (fieldName.equalsIgnoreCase("name")) {
+				project.setName((String) value);
+			} else if (fieldName.equalsIgnoreCase("notifyEmail")) {
+				project.setNotifyEmail(stringValue);
+			} else if (fieldName.equalsIgnoreCase("organism")) {
+				MiriamData organism = updateMiriamData(project.getOrganism(), value);
 				project.setOrganism(organism);
-			} else if (string.equalsIgnoreCase("disease")) {
-				Object res = data.get(string);
-				MiriamData disease = updateMiriamData(project.getDisease(), res);
+			} else if (fieldName.equalsIgnoreCase("disease")) {
+				MiriamData disease = updateMiriamData(project.getDisease(), value);
 				project.setDisease(disease);
 			} else {
-				throw new QueryException("Unknown field: " + string);
+				throw new QueryException("Unknown field: " + fieldName);
 			}
 		}
 		getProjectService().updateProject(project);
diff --git a/rest-api/src/test/java/lcsb/mapviewer/api/projects/ProjectRestImplTest.java b/rest-api/src/test/java/lcsb/mapviewer/api/projects/ProjectRestImplTest.java
index 697196ce282385b7f203b70f84e244eacb06e67f..97482c221658f95a21ec2112e04bc8b5b9f06757 100644
--- a/rest-api/src/test/java/lcsb/mapviewer/api/projects/ProjectRestImplTest.java
+++ b/rest-api/src/test/java/lcsb/mapviewer/api/projects/ProjectRestImplTest.java
@@ -174,6 +174,8 @@ public class ProjectRestImplTest extends RestTestFunctions {
 			data.put("name", "test");
 			data.put("organism", null);
 			data.put("disease", disease);
+			data.put("projectId", "sample");
+			data.put("id", "0");
 			projectRest.updateProject(adminToken.getId(), "sample", data);
 		} catch (Exception e) {
 			e.printStackTrace();
@@ -236,6 +238,7 @@ public class ProjectRestImplTest extends RestTestFunctions {
 			project = new Project();
 			model = super.getModelForFile(string, true);
 			project.addModel(model);
+			project.setProjectId(model.getName());
 		}
 		IModelService mockModelService = Mockito.mock(IModelService.class);
 		Mockito.when(mockModelService.getLastModelByProjectId(anyString(), any())).thenReturn(model);