diff --git a/src/main/java/rife/bld/operations/JavacOptions.java b/src/main/java/rife/bld/operations/JavacOptions.java
index 806a652..19613c6 100644
--- a/src/main/java/rife/bld/operations/JavacOptions.java
+++ b/src/main/java/rife/bld/operations/JavacOptions.java
@@ -301,7 +301,7 @@ public class JavacOptions extends ArrayList<String> {
      * @since 1.5.18
      */
     public boolean containsRelease() {
-        return contains("-release");
+        return contains("--release");
     }
 
     /**