diff --git a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ImageFileCreator.java b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ImageFileCreator.java
index 5e8d85b1eff..6246e29afc2 100644
--- a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ImageFileCreator.java
+++ b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ImageFileCreator.java
@@ -46,6 +46,7 @@ import jdk.tools.jlink.internal.Archive.Entry;
 import jdk.tools.jlink.internal.Archive.Entry.EntryType;
 import jdk.tools.jlink.internal.PoolImpl.CompressedModuleData;
 import jdk.tools.jlink.plugin.ExecutableImage;
+import jdk.tools.jlink.plugin.PluginException;
 import jdk.tools.jlink.plugin.Pool;
 import jdk.tools.jlink.plugin.Pool.ModuleData;
 import jdk.tools.jlink.plugin.Pool.ModuleDataType;
@@ -183,6 +184,8 @@ public final class ImageFileCreator {
         PoolImpl resultResources;
         try {
             resultResources = pluginSupport.visitResources(allContent);
+        } catch (PluginException pe) {
+            throw pe;
         } catch (Exception ex) {
             throw new IOException(ex);
         }
diff --git a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/IncludeLocalesPlugin.java b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/IncludeLocalesPlugin.java
index 8a37d8c518e..b373f85b935 100644
--- a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/IncludeLocalesPlugin.java
+++ b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/IncludeLocalesPlugin.java
@@ -92,6 +92,7 @@ public final class IncludeLocalesPlugin implements TransformerPlugin, ResourcePr
         "*sun/text/resources/cldr/ext/[^\\/]+_%%.class," +
         "*sun/util/resources/cldr/ext/[^\\/]+_%%.class,";
     private Predicate<String> predicate;
+    private String userParam;
     private List<Locale.LanguageRange> priorityList;
     private List<Locale> available;
     private List<String> filtered;
@@ -155,13 +156,17 @@ public final class IncludeLocalesPlugin implements TransformerPlugin, ResourcePr
 
     @Override
     public void configure(Map<String, String> config) {
-        try {
-            priorityList = Arrays.stream(config.get(NAME).split(","))
-                .map(Locale.LanguageRange::new)
-                .collect(Collectors.toList());
-        } catch (IllegalArgumentException iae) {
-            throw new PluginException(iae.getLocalizedMessage());
-        }
+        userParam = config.get(NAME);
+        priorityList = Arrays.stream(userParam.split(","))
+            .map(s -> {
+                try {
+                    return new Locale.LanguageRange(s);
+                } catch (IllegalArgumentException iae) {
+                    throw new PluginException(String.format(
+                        PluginsResourceBundle.getMessage(NAME + ".invalidtag"), s));
+                }
+            })
+            .collect(Collectors.toList());
     }
 
     @Override
@@ -191,7 +196,8 @@ public final class IncludeLocalesPlugin implements TransformerPlugin, ResourcePr
         filtered = filterLocales(available);
 
         if (filtered.isEmpty()) {
-            throw new PluginException(PluginsResourceBundle.getMessage(NAME + ".nomatchinglocales"));
+            throw new PluginException(
+                String.format(PluginsResourceBundle.getMessage(NAME + ".nomatchinglocales"), userParam));
         }
 
         try {
diff --git a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/resources/plugins.properties b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/resources/plugins.properties
index 0fd33da26b0..38ffbe493f1 100644
--- a/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/resources/plugins.properties
+++ b/jdk/src/jdk.jlink/share/classes/jdk/tools/jlink/resources/plugins.properties
@@ -20,7 +20,7 @@ Level 0: constant string sharing\n\
 Level 1: ZIP\n\
 Level 2: both.\n\
 An optional filter can be specified to list the pattern of files to be filtered.\n\
-Use ^ for negation. eg: *Exception.class,*Error.class,^/java.base/java/lang/*
+Use ^ for negation. e.g.: *Exception.class,*Error.class,^/java.base/java/lang/*
 
 compact-cp.argument=<resource paths>
 
@@ -32,17 +32,17 @@ copy-files.argument=<List of <file path>=<image target> to copy to the image>.
 
 copy-files.description=\
 If files to copy are not absolute path, JDK home dir is used.\n\
-eg: jrt-fs.jar,LICENSE,/home/me/myfile.txt=somewehere/conf.txt
+e.g.: jrt-fs.jar,LICENSE,/home/me/myfile.txt=somewehere/conf.txt
 
 exclude-files.argument=<files to exclude | files of excluded files>
 
 exclude-files.description=\
-Specify files to exclude. eg: *.diz, /java.base/native/client/*
+Specify files to exclude. e.g.: *.diz, /java.base/native/client/*
 
 exclude-resources.argument=<resources to exclude | file of excluded resources>
 
 exclude-resources.description=\
-Specify resources to exclude. eg: *.jcov, */META-INF/*
+Specify resources to exclude. e.g.: *.jcov, */META-INF/*
 
 installed-modules.description=Fast loading of module descriptors (always enabled)
 
@@ -51,7 +51,7 @@ onoff.argument=<on|off>
 sort-resources.argument=<paths in priority order | file with resource paths>
 
 sort-resources.description=\
-Sort resources. eg: */modules-info.class,/java-base/java/lang/*
+Sort resources. e.g.: */modules-info.class,/java-base/java/lang/*
 
 strip-debug.description=\
 Strip debug information from the output image
@@ -73,13 +73,16 @@ include-locales.argument=\
 
 include-locales.description=\
 BCP 47 language tags separated by a comma, allowing locale matching\n\
-defined in RFC 4647. eg: en,ja,*-IN
+defined in RFC 4647. e.g.: en,ja,*-IN
 
 include-locales.missingpackages=\
 Missing locale data packages in jdk.localedata:\n\t
 
 include-locales.nomatchinglocales=\
-No matching locales found. Check the specified pattern.
+No matching locales found for \"%s\". Check the specified pattern.
+
+include-locales.invalidtag=\
+Invalid language tag: %s
 
 main.status.ok=Functional.
 
diff --git a/jdk/test/tools/jlink/JLink2Test.java b/jdk/test/tools/jlink/JLink2Test.java
index 4e08a8146be..d68242590ce 100644
--- a/jdk/test/tools/jlink/JLink2Test.java
+++ b/jdk/test/tools/jlink/JLink2Test.java
@@ -101,7 +101,7 @@ public class JLink2Test {
                 .addJmods(helper.getStdJmodsDir())
                 .addJmods(jar.getParent())
                 .addMods("bad")
-                .call().assertFailure("(\n|\r|.)*Error: jdk.tools.jlink.plugin.PluginException: module-info.class not found for bad module(\n|\r|.)*");
+                .call().assertFailure("(\n|\r|.)*Error: module-info.class not found for bad module(\n|\r|.)*");
         try (JarOutputStream out = new JarOutputStream(new FileOutputStream(jar.toFile()))) {
             JarEntry entry = new JarEntry("classes");
             out.putNextEntry(entry);
@@ -118,7 +118,7 @@ public class JLink2Test {
                 .addJmods(jar.getParent())
                 .addJars(helper.getStdJmodsDir())
                 .addMods("bad")
-                .call().assertFailure("(\n|\r|.)*Error: jdk.tools.jlink.plugin.PluginException: module-info.class not found for bad module(\n|\r|.)*");
+                .call().assertFailure("(\n|\r|.)*Error: module-info.class not found for bad module(\n|\r|.)*");
     }
 
     private static void testSameNames(Helper helper) throws Exception {
diff --git a/jdk/test/tools/jlink/plugins/IncludeLocalesPluginTest.java b/jdk/test/tools/jlink/plugins/IncludeLocalesPluginTest.java
index 26c217eb57a..e109e6c496f 100644
--- a/jdk/test/tools/jlink/plugins/IncludeLocalesPluginTest.java
+++ b/jdk/test/tools/jlink/plugins/IncludeLocalesPluginTest.java
@@ -298,17 +298,19 @@ public class IncludeLocalesPluginTest {
             null,
             null,
             null,
-            new PluginException(
-                PluginsResourceBundle.getMessage("include-locales.nomatchinglocales"))
-                .toString(),
+            new PluginException(String.format(
+                PluginsResourceBundle.getMessage("include-locales.nomatchinglocales"), "xyz"))
+                .getMessage(),
         },
 
         // Error case: Invalid argument
-        {"--include-locales=zh_HK",
+        {"--include-locales=en,zh_HK",
             null,
             null,
             null,
-            "range=zh_hk",
+            new PluginException(String.format(
+                PluginsResourceBundle.getMessage("include-locales.invalidtag"), "zh_HK"))
+                .getMessage(),
         },
     };