diff --git a/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java b/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
index a953be2c2..2113512df 100644
--- a/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
+++ b/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
@@ -1,5 +1,3 @@
-// Copyright 2000-2020. JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
-
 package org.intellij.sdk.project.model;
 
 import com.intellij.openapi.actionSystem.*;
@@ -54,10 +52,14 @@ public class LibrariesAction extends AnAction {
           }
         }
       }
+      String fileAndLibs;
       if (jars.length() > 0) {
-        Messages.showInfoMessage("Libraries for file " + virtualFile.getName() + ": " + jars.toString(),
-                                 "Libraries Info");
+        fileAndLibs = virtualFile.getName() + ": " + jars.toString();
+      } else {
+        fileAndLibs = "None";
       }
+      Messages.showInfoMessage("Libraries for file: " + fileAndLibs,
+              "Libraries Info");
     }
   }
 }
diff --git a/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java b/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
index cdd21d3df..f14782cec 100644
--- a/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
+++ b/project_model/src/main/java/org/intellij/sdk/project/model/ProjectFileIndexSampleAction.java
@@ -45,8 +45,8 @@ public class ProjectFileIndexSampleAction extends AnAction {
       Messages.showInfoMessage("Module: " + moduleName + "\n" +
                                "Module content root: " + moduleContentRoot + "\n" +
                                "Is library file: " + isLibraryFile + "\n" +
-                               "Is in library classes" + isInLibraryClasses +
-                               "Is in library source" + isInLibrarySource,
+                               "Is in library classes: " + isInLibraryClasses +
+                               ", Is in library source: " + isInLibrarySource,
                                "Main File Info for" + virtualFile.getName());
     }
   }
diff --git a/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java b/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
index df4632d29..2b8287a8b 100644
--- a/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
+++ b/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
@@ -23,7 +23,7 @@ public class ShowSourceRootsActions extends AnAction {
     for (VirtualFile file : vFiles) {
       sourceRootsList.append(file.getUrl()).append("\n");
     }
-    Messages.showInfoMessage("Source roots for the " + projectName + " plugin:\n" + sourceRootsList,
+    Messages.showInfoMessage("Source roots for the " + projectName + " plugin:\n" + sourceRootsList.toString(),
                              "Project Properties");
   }