diff --git a/src/main/java/hudson/plugins/parameterizedtrigger/BuildTriggerConfig.java b/src/main/java/hudson/plugins/parameterizedtrigger/BuildTriggerConfig.java
index 9d7fe83a..47a2e589 100644
--- a/src/main/java/hudson/plugins/parameterizedtrigger/BuildTriggerConfig.java
+++ b/src/main/java/hudson/plugins/parameterizedtrigger/BuildTriggerConfig.java
@@ -645,28 +645,30 @@ public FormValidation doCheckProjects(@AncestorInPath Job<?,?> project, @QueryPa
             boolean hasProjects = false;
             while(tokens.hasMoreTokens()) {
                 String projectName = tokens.nextToken().trim();
-                if (StringUtils.isNotBlank(projectName)) {
-                	Item item = Jenkins.getInstance().getItem(projectName,project,Item.class); // only works after version 1.410
-                    if(item==null){
-                        Item nearest = Items.findNearest(Job.class, projectName, Jenkins.getInstance());
-                        String alternative = nearest != null ? nearest.getRelativeNameFrom(project) : "?";
-                        return FormValidation.error(Messages.BuildTrigger_NoSuchProject(projectName, alternative));
-                    }
-                    if(!(item instanceof Job) || !(item instanceof ParameterizedJobMixIn.ParameterizedJob)) {
-                        return FormValidation.error(Messages.BuildTrigger_NotBuildable(projectName));
-                    }
+                if (StringUtils.isBlank(projectName)) {
+                    return FormValidation.error("Blank project name in the list");
+                }
 
-                    // check whether the supposed user is expected to be able to build
-                    Authentication auth = Tasks.getAuthenticationOf((ParameterizedJobMixIn.ParameterizedJob)project);
-                    if (auth.equals(ACL.SYSTEM) && !QueueItemAuthenticatorConfiguration.get().getAuthenticators().isEmpty()) {
-                        auth = Jenkins.ANONYMOUS;
-                    }
-                    if (!item.getACL().hasPermission(auth, Item.BUILD)) {
-                        return FormValidation.error(Messages.BuildTrigger_you_have_no_permission_to_build_(projectName));
-                    }
+                Item item = Jenkins.getInstance().getItem(projectName,project,Item.class); // only works after version 1.410
+                if(item==null){
+                    Item nearest = Items.findNearest(Job.class, projectName, Jenkins.getInstance());
+                    String alternative = nearest != null ? nearest.getRelativeNameFrom(project) : "?";
+                    return FormValidation.error(Messages.BuildTrigger_NoSuchProject(projectName, alternative));
+                }
+                if(!(item instanceof Job) || !(item instanceof ParameterizedJobMixIn.ParameterizedJob)) {
+                    return FormValidation.error(Messages.BuildTrigger_NotBuildable(projectName));
+                }
 
-                    hasProjects = true;
+                // check whether the supposed user is expected to be able to build
+                Authentication auth = Tasks.getAuthenticationOf((ParameterizedJobMixIn.ParameterizedJob)project);
+                if (auth.equals(ACL.SYSTEM) && !QueueItemAuthenticatorConfiguration.get().getAuthenticators().isEmpty()) {
+                    auth = Jenkins.ANONYMOUS;
                 }
+                if (!item.getACL().hasPermission(auth, Item.BUILD)) {
+                    return FormValidation.error(Messages.BuildTrigger_you_have_no_permission_to_build_(projectName));
+                }
+
+                hasProjects = true;
             }
             if (!hasProjects) {
             	return FormValidation.error(Messages.BuildTrigger_NoProjectSpecified());
diff --git a/src/main/java/hudson/plugins/parameterizedtrigger/ParameterizedTriggerUtils.java b/src/main/java/hudson/plugins/parameterizedtrigger/ParameterizedTriggerUtils.java
index 76734ba6..05fcfa72 100644
--- a/src/main/java/hudson/plugins/parameterizedtrigger/ParameterizedTriggerUtils.java
+++ b/src/main/java/hudson/plugins/parameterizedtrigger/ParameterizedTriggerUtils.java
@@ -68,8 +68,8 @@ public static String readFileToString(FilePath f, String encoding) throws IOExce
         }
     }
     
-        /**
-     * {@link read VirtualFile
+    /**
+     * {@link} read VirtualFile
      * 
      * @param f file to read
      * @return read string
diff --git a/src/test/java/hudson/plugins/parameterizedtrigger/test/BuildTriggerConfigTest.java b/src/test/java/hudson/plugins/parameterizedtrigger/test/BuildTriggerConfigTest.java
index 5cb8c3c3..c31caa4b 100644
--- a/src/test/java/hudson/plugins/parameterizedtrigger/test/BuildTriggerConfigTest.java
+++ b/src/test/java/hudson/plugins/parameterizedtrigger/test/BuildTriggerConfigTest.java
@@ -43,6 +43,7 @@
 import hudson.security.AuthorizationMatrixProperty;
 import hudson.security.Permission;
 import hudson.security.ProjectMatrixAuthorizationStrategy;
+import hudson.util.FormValidation;
 import jenkins.model.Jenkins;
 import org.jenkinsci.plugins.workflow.cps.CpsFlowDefinition;
 import org.jenkinsci.plugins.workflow.job.WorkflowJob;
@@ -307,4 +308,39 @@ public void testGetProjectListTriggered() throws Exception {
 
     }
 
+    @Test
+    public void testBlankConfig() throws Exception {
+        Project<?, ?> masterProject = r.createFreeStyleProject("project");
+
+        FormValidation form = r.jenkins.getDescriptorByType(BuildTriggerConfig.DescriptorImpl.class).doCheckProjects(masterProject, "");
+
+        assertEquals(FormValidation.Kind.ERROR, form.kind);
+    }
+
+    @Test
+    public void testNonExistedProject() throws Exception {
+        Project<?, ?> masterProject = r.createFreeStyleProject("project");
+
+        FormValidation form = r.jenkins.getDescriptorByType(BuildTriggerConfig.DescriptorImpl.class).doCheckProjects(masterProject, "nonExistedProject");
+
+        assertEquals(FormValidation.Kind.ERROR, form.kind);
+    }
+
+    @Test
+    public void testValidConfig() throws Exception {
+        Project<?, ?> masterProject = r.createFreeStyleProject("project");
+
+        FormValidation form = r.jenkins.getDescriptorByType(BuildTriggerConfig.DescriptorImpl.class).doCheckProjects(masterProject, "project");
+
+        assertEquals(FormValidation.Kind.OK, form.kind);
+    }
+
+    @Test
+    public void testBlankProjectNameInConfig() throws Exception {
+        Project<?, ?> masterProject = r.createFreeStyleProject("project");
+
+        FormValidation form = r.jenkins.getDescriptorByType(BuildTriggerConfig.DescriptorImpl.class).doCheckProjects(masterProject, "project, ");
+
+        assertEquals(FormValidation.Kind.ERROR, form.kind);
+    }
 }