diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
index 99b2f53e791..4f0da1a9036 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
@@ -75,7 +75,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
         arguments.metaInfo = metaInfo;
 
         List<String> libraries = getKotlinJavascriptLibraryFiles();
-        LOG.debug("libraryFiles: " + libraries);
+        getLog().debug("libraryFiles: " + libraries);
         arguments.libraryFiles = ArrayUtil.toStringArray(libraries);
 
         arguments.sourceMap = sourceMap;
@@ -86,7 +86,8 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
             collector.add(new File(outputFile).getParent());
         }
         if (metaInfo) {
-            String metaFile = KotlinPackage.substringBeforeLast(outputFile, JavaScript.DOT_EXTENSION, outputFile) + KotlinJavascriptMetadataUtils.META_JS_SUFFIX;
+            String output = com.google.common.base.Objects.firstNonNull(outputFile, ""); // fqname here because of J8 compatibility issues
+            String metaFile = KotlinPackage.substringBeforeLast(output, JavaScript.DOT_EXTENSION, output) + KotlinJavascriptMetadataUtils.META_JS_SUFFIX;
             collector.add(new File(metaFile).getParent());
         }
     }
@@ -107,7 +108,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
                     libraries.add(file.getAbsolutePath());
                 }
                 else {
-                    LOG.warn("artifact " + artifact + " is not a Kotlin Javascript Library");
+                    getLog().warn("artifact " + artifact + " is not a Kotlin Javascript Library");
                 }
             }
         }
@@ -117,7 +118,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
                 libraries.add(file);
             }
             else {
-                LOG.warn("JS output directory missing: " + file);
+                getLog().warn("JS output directory missing: " + file);
             }
         }
 
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
index ee8c54b6360..d9a11a2e9da 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
@@ -85,14 +85,14 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
 
     @Override
     protected void configureSpecificCompilerArguments(@NotNull K2JVMCompilerArguments arguments) throws MojoExecutionException {
-        LOG.info("Classes directory is " + output);
+        getLog().info("Classes directory is " + output);
         arguments.destination = output;
 
         // don't include runtime, it should be in maven dependencies
         arguments.noStdlib = true;
 
         if (module != null) {
-            LOG.info("Compiling Kotlin module " + module);
+            getLog().info("Compiling Kotlin module " + module);
             arguments.module = module;
         }
 
@@ -100,16 +100,16 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
 
         if (!classpathList.isEmpty()) {
             String classPathString = join(classpathList, File.pathSeparator);
-            LOG.info("Classpath: " + classPathString);
+            getLog().info("Classpath: " + classPathString);
             arguments.classpath = classPathString;
         }
 
-        LOG.info("Classes directory is " + output);
+        getLog().info("Classes directory is " + output);
         arguments.destination = output;
 
         arguments.noJdkAnnotations = true;
-        arguments.annotations = getFullAnnotationsPath(LOG, annotationPaths);
-        LOG.info("Using kotlin annotations from " + arguments.annotations);
+        arguments.annotations = getFullAnnotationsPath(getLog(), annotationPaths);
+        getLog().info("Using kotlin annotations from " + arguments.annotations);
 
         try {
             Args.parse(arguments, ArrayUtil.toStringArray(args));
@@ -119,7 +119,7 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
         }
 
         if (arguments.noOptimize) {
-            LOG.info("Optimization is turned off");
+            getLog().info("Optimization is turned off");
         }
     }
 
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
index ba59efd9aac..8e5e25cc268 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
@@ -104,15 +104,13 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     @Parameter
     public List<String> args;
 
-    protected final Log LOG = getLog();
-
     @Override
     public void execute() throws MojoExecutionException, MojoFailureException {
 
-        LOG.info("Kotlin Compiler version " + KotlinVersion.VERSION);
+        getLog().info("Kotlin Compiler version " + KotlinVersion.VERSION);
 
         if (!hasKotlinFilesInSources()) {
-            LOG.warn("No sources found skipping Kotlin compile");
+            getLog().warn("No sources found skipping Kotlin compile");
             return;
         }
 
@@ -131,13 +129,13 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
                 String text = position + message;
 
                 if (CompilerMessageSeverity.VERBOSE.contains(severity)) {
-                    LOG.debug(text);
+                    getLog().debug(text);
                 } else if (CompilerMessageSeverity.ERRORS.contains(severity)) {
-                    LOG.error(text);
+                    getLog().error(text);
                 } else if (severity == CompilerMessageSeverity.INFO) {
-                    LOG.info(text);
+                    getLog().info(text);
                 } else {
-                    LOG.warn(text);
+                    getLog().warn(text);
                 }
             }
         };
@@ -227,7 +225,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     protected abstract void configureSpecificCompilerArguments(@NotNull A arguments) throws MojoExecutionException;
 
     private void configureCompilerArguments(@NotNull A arguments) throws MojoExecutionException {
-        if (LOG.isDebugEnabled()) {
+        if (getLog().isDebugEnabled()) {
             arguments.verbose = true;
         }
 
@@ -237,18 +235,18 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
                 sources.add(source);
             }
             else {
-                LOG.warn("Source root doesn't exist: " + source);
+                getLog().warn("Source root doesn't exist: " + source);
             }
         }
 
-        if (sources == null || sources.isEmpty()) {
+        if (sources.isEmpty()) {
             throw new MojoExecutionException("No source roots to compile");
         }
 
         arguments.suppressWarnings = nowarn;
 
         arguments.freeArgs.addAll(sources);
-        LOG.info("Compiling Kotlin sources from " + sources);
+        getLog().info("Compiling Kotlin sources from " + sources);
 
         configureSpecificCompilerArguments(arguments);
 
@@ -260,7 +258,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
         }
 
         if (arguments.noInline) {
-            LOG.info("Method inlining is turned off");
+            getLog().info("Method inlining is turned off");
         }
     }
 }