diff --git a/org.planqk.atlas.web/src/main/java/org/planqk/atlas/web/dtos/ImplementationDto.java b/org.planqk.atlas.web/src/main/java/org/planqk/atlas/web/dtos/ImplementationDto.java
index e3f502a6..36519d03 100644
--- a/org.planqk.atlas.web/src/main/java/org/planqk/atlas/web/dtos/ImplementationDto.java
+++ b/org.planqk.atlas.web/src/main/java/org/planqk/atlas/web/dtos/ImplementationDto.java
@@ -74,5 +74,5 @@ public class ImplementationDto implements Identifyable {
 
     private Set<SoftwarePlatformDto> softwarePlatforms;
 
-    private Set<URI> patterns;
+    private Set<String> patterns;
 }