diff --git a/docs/reference-manual/java-on-truffle/README.md b/docs/reference-manual/java-on-truffle/README.md
index 38542f79b1eab..4768f5091ca23 100644
--- a/docs/reference-manual/java-on-truffle/README.md
+++ b/docs/reference-manual/java-on-truffle/README.md
@@ -57,7 +57,7 @@ java -truffle [options] class
 ```
 To execute a JAR file:
 ```shell
-java -truffle [options] --jar jarfile
+java -truffle [options] -jar jarfile
 ```
 
 Using Java 11 based GraalVM distribution, you can also run a Java application from the main class in a module, or run a single source-file program:
@@ -125,7 +125,7 @@ cd spring-petclinic
 
 3. Then run it from the command line by selecting the `-truffle` runtime:
 ```java
-java -truffle -jar target/spring-petclinic-<version>-SNAPSHOT.jar
+java -truffle --jar target/spring-petclinic-<version>-SNAPSHOT.jar
 ```
 
 4. When the application starts, access it on [localhost:8000](http://localhost:8080/).
diff --git a/docs/reference-manual/native-image/README.md b/docs/reference-manual/native-image/README.md
index d24d8556f2ddb..b12b500004c7e 100644
--- a/docs/reference-manual/native-image/README.md
+++ b/docs/reference-manual/native-image/README.md
@@ -195,7 +195,7 @@ native-image [options] -jar jarfile [imagename]
 4. Create a native executable:
 
     ```
-    native-image --jar App.jar
+    native-image -jar App.jar
     ```
     It will produce a native executable in the project root directory.
 5. Run the native executable: