diff --git a/src/corpus/testcase.rs b/src/corpus/testcase.rs
index cc689e9465..450a3ab9c2 100644
--- a/src/corpus/testcase.rs
+++ b/src/corpus/testcase.rs
@@ -195,9 +195,10 @@ where
     }
 
     /// Create a new Testcase instace given an input
-    pub fn new(input: I) -> Self {
+    pub fn new<T>(input: T) -> Self 
+    where T: Into<I>{
         Testcase {
-            input: Some(input),
+            input: Some(input.into()),
             filename: None,
             metadatas: HashMap::default(),
         }
diff --git a/src/engines/mod.rs b/src/engines/mod.rs
index 45fd50370f..52749d1e54 100644
--- a/src/engines/mod.rs
+++ b/src/engines/mod.rs
@@ -87,7 +87,7 @@ mod tests {
     use core::cell::RefCell;
 
     use crate::corpus::{Corpus, InMemoryCorpus, Testcase};
-    use crate::engines::{Engine, DefaultEngine};
+    use crate::engines::{DefaultEngine, Engine};
     use crate::executors::inmemory::InMemoryExecutor;
     use crate::executors::{Executor, ExitKind};
     use crate::inputs::bytes::BytesInput;
@@ -106,7 +106,7 @@ mod tests {
         let rand: Rc<_> = DefaultRand::new(0).into();
 
         let mut corpus = InMemoryCorpus::<BytesInput, _>::new(&rand);
-        let testcase = Testcase::new(BytesInput::new(vec![0; 4])).into();
+        let testcase = Testcase::new(vec![0; 4]).into();
         corpus.add(testcase);
         let executor: Rc<RefCell<InMemoryExecutor<BytesInput>>> =
             InMemoryExecutor::new(harness).into();
diff --git a/src/mutators/scheduled.rs b/src/mutators/scheduled.rs
index ed7bfe6e6d..8c59575175 100644
--- a/src/mutators/scheduled.rs
+++ b/src/mutators/scheduled.rs
@@ -339,9 +339,9 @@ mod tests {
         // With the current impl, seed of 1 will result in a split at pos 2.
         let rand: Rc<_> = XKCDRand::new().into();
         let mut has_rand = DefaultHasRand::new(&rand);
-        let mut corpus = InMemoryCorpus::new(&rand);
-        corpus.add(Testcase::new(BytesInput::new(vec!['a' as u8, 'b' as u8, 'c' as u8])).into());
-        corpus.add(Testcase::new(BytesInput::new(vec!['d' as u8, 'e' as u8, 'f' as u8])).into());
+        let mut corpus: InMemoryCorpus<BytesInput, _> = InMemoryCorpus::new(&rand);
+        corpus.add(Testcase::new(vec!['a' as u8, 'b' as u8, 'c' as u8]).into());
+        corpus.add(Testcase::new(vec!['d' as u8, 'e' as u8, 'f' as u8]).into());
 
         let testcase_rr = corpus.next().expect("Corpus did not contain entries");
         let mut testcase = testcase_rr.borrow_mut();