diff --git a/comparing_references_inspection/src/main/resources/META-INF/plugin.xml b/comparing_references_inspection/src/main/resources/META-INF/plugin.xml
index 3faa3d664..05ae6fa2b 100644
--- a/comparing_references_inspection/src/main/resources/META-INF/plugin.xml
+++ b/comparing_references_inspection/src/main/resources/META-INF/plugin.xml
@@ -53,7 +53,7 @@
             enabledByDefault= Inspection state when Inspections panel is created.
             level= The default level of error found by this inspection, e.g. INFO, ERROR, etc.
                 @see com.intellij.codeHighlighting.HighlightDisplayLevel
-            inplementationClass= FQN of inspection implementation
+            implementationClass= FQN of inspection implementation
            -->
     <localInspection language="JAVA"
             displayName="SDK: '==' or '!=' used instead of 'equals()'"
diff --git a/max_opened_projects/src/main/resources/META-INF/plugin.xml b/max_opened_projects/src/main/resources/META-INF/plugin.xml
index e106d663d..0cf2327af 100644
--- a/max_opened_projects/src/main/resources/META-INF/plugin.xml
+++ b/max_opened_projects/src/main/resources/META-INF/plugin.xml
@@ -20,7 +20,7 @@
   <change-notes>
     <![CDATA[
       <ul>
-        <li><b>2.1.0</b> Remove project component and use listener instead. No longer denies opening additional projets. Just notifies the user.</li>
+        <li><b>2.1.0</b> Remove project component and use listener instead. No longer denies opening additional projects. Just notifies the user.</li>
         <li><b>2.0.0</b> Convert to Gradle-based plugin.</li>
         <li><b>1.0.0</b> Release 2018.3 and earlier.</li>
       </ul>
diff --git a/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java b/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
index 8314878a7..d8ee8f938 100644
--- a/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
+++ b/product_specific/pycharm_basics/src/main/java/org/intellij/sdk/pycharm/PopupDialogAction.java
@@ -24,8 +24,8 @@ public class PopupDialogAction extends AnAction {
    */
   @Override
   public void actionPerformed(@NotNull AnActionEvent event) {
-    Project proj = event.getProject();
-    Messages.showMessageDialog(proj,
+    Project project = event.getProject();
+    Messages.showMessageDialog(project,
                                "Popup dialog action",
                                "Greetings from PyCharm Basics Plugin",
                                Messages.getInformationIcon());
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguage.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguage.java
index af2f2bf4b..41cb2c636 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguage.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguage.java
@@ -10,4 +10,4 @@ public class SimpleLanguage extends Language {
   private SimpleLanguage() {
     super("Simple");
   }
-}
\ No newline at end of file
+}
diff --git a/simple_language_plugin/src/main/resources/META-INF/plugin.xml b/simple_language_plugin/src/main/resources/META-INF/plugin.xml
index b08f6062f..23747a333 100644
--- a/simple_language_plugin/src/main/resources/META-INF/plugin.xml
+++ b/simple_language_plugin/src/main/resources/META-INF/plugin.xml
@@ -32,8 +32,8 @@
   <vendor url="https://plugins.jetbrains.com">IntelliJ Platform SDK</vendor>
 
   <extensions defaultExtensionNs="com.intellij">
-    <fileType name="Simple file" implementationClass="org.intellij.sdk.language.SimpleFileType" fieldName="INSTANCE"
-              language="Simple" extensions="simple"/>
+    <fileType name="Simple File" implementationClass="org.intellij.sdk.language.SimpleFileType" fieldName="INSTANCE"
+              language="Simple" extensions="simple" />
     <!-- Only required for versions of the IntelliJ Platform prior to v2019.2.
          Use fileTypeFactory extension point INSTEAD of fileType.
     <fileTypeFactory implementation="org.intellij.sdk.language.SimpleFileTypeFactory"/>