diff --git a/hipster-core/src/main/java/es/usc/citius/hipster/model/problem/ProblemBuilder.java b/hipster-core/src/main/java/es/usc/citius/hipster/model/problem/ProblemBuilder.java
index 62b1abc..c62bc31 100644
--- a/hipster-core/src/main/java/es/usc/citius/hipster/model/problem/ProblemBuilder.java
+++ b/hipster-core/src/main/java/es/usc/citius/hipster/model/problem/ProblemBuilder.java
@@ -99,7 +99,7 @@ private WithoutAction(){}
                  *
                  * @param transitionFunction transition function to be used.
                  */
-                public Uninformed<Void> useTransitionFunction(StateTransitionFunction<S> transitionFunction){
+                public Uninformed<Void> useTransitionFunction(TransitionFunction<Void, S> transitionFunction){
                     return new Uninformed<Void>(transitionFunction);
                 }
             }