diff --git a/src/projectors/adaptive/ifdd.rs b/src/projectors/adaptive/ifdd.rs
index 1af4d53..ddf4f08 100644
--- a/src/projectors/adaptive/ifdd.rs
+++ b/src/projectors/adaptive/ifdd.rs
@@ -94,7 +94,7 @@ impl<P: Projector<[f64]>> Space for IFDD<P> {
 
 impl<P: Projector<[f64]>> Projector<[f64]> for IFDD<P> {
     fn project(&self, input: &[f64]) -> Projection {
-        let mut p = self.project_base(input);
+        let mut p = self.base.project(input);
         let np: Vec<usize> = (self.base.dim()..self.dim()).filter_map(|i| {
 
             let f = &self.features[i];
@@ -149,10 +149,6 @@ impl<P: Projector<[f64]>> AdaptiveProjector<[f64]> for IFDD<P> {
 
         Some(mapping)
     }
-
-    fn project_base(&self, input: &[f64]) -> Projection {
-        self.base.project(input)
-    }
 }
 
 
@@ -212,17 +208,4 @@ mod tests {
             parent_indices: [0, 3].iter().cloned().collect(),
         });
     }
-
-    #[test]
-    fn test_project_base() {
-        let b = TileCoding::new(SHBuilder::default(), 8, 100);
-        let f = IFDD::new(b.clone(), 100.0);
-
-        assert_eq!(b.project(&vec![0.0, 1.0]), f.project_base(&vec![0.0, 1.0]));
-
-        let b = BaseProjector;
-        let f = IFDD::new(b.clone(), 100.0);
-
-        assert_eq!(b.project(&vec![0.0, 1.0]), f.project_base(&vec![0.0, 1.0]));
-    }
 }
diff --git a/src/projectors/mod.rs b/src/projectors/mod.rs
index f50113b..132ff35 100644
--- a/src/projectors/mod.rs
+++ b/src/projectors/mod.rs
@@ -32,8 +32,6 @@ pub trait Projector<I: ?Sized>: Space<Value = Projection> {
 pub trait AdaptiveProjector<I: ?Sized>: Projector<I> {
     fn discover(&mut self, input: &I, error: f64) -> Option<HashMap<usize, IndexSet>>;
     fn add_feature(&mut self, feature: CandidateFeature) -> Option<(usize, IndexSet)>;
-
-    fn project_base(&self, input: &I) -> Projection;
 }
 
 impl<P: Projector<[f64]>> Projector<Vec<f64>> for P {