diff --git a/platform/core-api/src/com/intellij/openapi/application/ApplicationInfo.java b/platform/core-api/src/com/intellij/openapi/application/ApplicationInfo.java
index 2d13d74edbb0..cdd4af3c0347 100644
--- a/platform/core-api/src/com/intellij/openapi/application/ApplicationInfo.java
+++ b/platform/core-api/src/com/intellij/openapi/application/ApplicationInfo.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.application;
 
 import com.intellij.openapi.components.ServiceManager;
@@ -6,6 +6,7 @@ import com.intellij.openapi.util.BuildNumber;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.util.ObjectUtils;
 import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.awt.*;
@@ -72,8 +73,10 @@ public abstract class ApplicationInfo {
 
   public abstract boolean hasContextHelp();
 
+  @NotNull
   public abstract String getFullVersion();
 
+  @NotNull
   public abstract String getStrictVersion();
 
   public static ApplicationInfo getInstance() {
diff --git a/platform/core-impl/src/com/intellij/openapi/application/impl/ApplicationInfoImpl.java b/platform/core-impl/src/com/intellij/openapi/application/impl/ApplicationInfoImpl.java
index aee19e7d8ecc..ccba0874d477 100644
--- a/platform/core-impl/src/com/intellij/openapi/application/impl/ApplicationInfoImpl.java
+++ b/platform/core-impl/src/com/intellij/openapi/application/impl/ApplicationInfoImpl.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.application.impl;
 
 import com.google.common.annotations.VisibleForTesting;
@@ -261,6 +261,7 @@ public final class ApplicationInfoImpl extends ApplicationInfoEx {
     return myPatchVersion;
   }
 
+  @NotNull
   @Override
   public String getFullVersion() {
     String result;
@@ -276,6 +277,7 @@ public final class ApplicationInfoImpl extends ApplicationInfoEx {
     return result;
   }
 
+  @NotNull
   @Override
   public String getStrictVersion() {
     return myMajorVersion + "." + myMinorVersion + "." + StringUtil.notNullize(myMicroVersion, "0") + "." + StringUtil.notNullize(myPatchVersion, "0");