diff --git a/src/builder/java/speiger/src/builder/PrimitiveCollectionsBuilder.java b/src/builder/java/speiger/src/builder/PrimitiveCollectionsBuilder.java
index ee744bba..8ab7a343 100644
--- a/src/builder/java/speiger/src/builder/PrimitiveCollectionsBuilder.java
+++ b/src/builder/java/speiger/src/builder/PrimitiveCollectionsBuilder.java
@@ -251,7 +251,7 @@ public class PrimitiveCollectionsBuilder extends TemplateProcessor
 			Set<String> flags = new HashSet<>(Arrays.asList(args));
 			boolean silent = flags.contains("silent");
 			boolean force = flags.contains("force");
-			boolean tests = !flags.contains("tests");
+			boolean tests = flags.contains("tests");
 			boolean forceTests =  flags.contains("force-tests");
 			boolean load = flags.contains("load");
 			boolean save = flags.contains("save");