diff --git a/docs/reference-manual/native-image/BuildOptions.md b/docs/reference-manual/native-image/BuildOptions.md
index 5f166ea08300..580cdf2b78b5 100644
--- a/docs/reference-manual/native-image/BuildOptions.md
+++ b/docs/reference-manual/native-image/BuildOptions.md
@@ -90,7 +90,7 @@ Run `native-image --help` for help on build options.
 
 Run `native-image --help-extra` for help on additional options.
 
-* `--exclude-config`: exclude configuration for a comma-separated pair of class path/module path pattern and resource pattern. For example: `--exclude-config foo.jar,META-INF\/native-image\/.*.properties` ignores all properties files in _META-INF/native-image_ in all JAR files named _foo.jar_.
+* `--exclude-config`: exclude configuration for a space-separated pair of class path/module path pattern and resource pattern. For example: `--exclude-config foo.jar META-INF\/native-image\/.*.properties` ignores all properties files in _META-INF/native-image_ in all JAR files named _foo.jar_.
 * `--expert-options`: list image build options for experts
 * `--expert-options-all`: list all image build options for experts (use at your own risk). Options marked with _Extra help available_ contain help that can be shown with `--expert-options-detail`
 * `--expert-options-detail`: display all available help for a comma-separated list of option names. Pass `*` to show extra help for all options that contain it.
diff --git a/substratevm/src/com.oracle.svm.driver/resources/HelpExtra.txt b/substratevm/src/com.oracle.svm.driver/resources/HelpExtra.txt
index ce64c22d3a91..2feb33a4b354 100644
--- a/substratevm/src/com.oracle.svm.driver/resources/HelpExtra.txt
+++ b/substratevm/src/com.oracle.svm.driver/resources/HelpExtra.txt
@@ -1,8 +1,8 @@
 Non-standard options help:
 
-    --exclude-config      exclude configuration for a comma-separated pair of classpath/modulepath
+    --exclude-config      exclude configuration for a space-separated pair of classpath/modulepath
                           pattern and resource pattern. For example:
-                          '--exclude-config foo.jar,META-INF\/native-image\/.*.properties'
+                          '--exclude-config foo.jar META-INF\/native-image\/.*.properties'
                           ignores all .properties files in 'META-INF/native-image' in all
                           JARs named 'foo.jar'.
     --expert-options      lists image build options for experts