diff --git a/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java b/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java
index c06db802a7d..f57fe070f6f 100644
--- a/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java
+++ b/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java
@@ -84,7 +84,7 @@ public static boolean parseOnce() {
     @Option(help = "Name of the main entry point method. Optional if --shared is used.")//
     public static final HostedOptionKey<String> Method = new HostedOptionKey<>("main");
 
-    @APIOption(name = "o", valueSeparator = APIOption.WHITESPACE_SEPARATOR)//
+    @APIOption(name = "-o", valueSeparator = APIOption.WHITESPACE_SEPARATOR)//
     @Option(help = "Name of the output file to be generated", type = OptionType.User)//
     public static final HostedOptionKey<String> Name = new HostedOptionKey<>("");