diff --git a/digest/src/dev/fixed.rs b/digest/src/dev/fixed.rs
index ad57e7741..22d67c5e1 100644
--- a/digest/src/dev/fixed.rs
+++ b/digest/src/dev/fixed.rs
@@ -20,6 +20,7 @@ pub fn fixed_reset_test<D: FixedOutputReset + Clone + Default + HashMarker>(
     }
 
     // Test that it works when accepting the message in chunks
+    hasher2.reset();
     for n in 1..core::cmp::min(17, input.len()) {
         let mut hasher = D::new();
         for chunk in input.chunks(n) {
diff --git a/digest/src/dev/variable.rs b/digest/src/dev/variable.rs
index aab77a38b..9321f06d2 100644
--- a/digest/src/dev/variable.rs
+++ b/digest/src/dev/variable.rs
@@ -26,6 +26,7 @@ pub fn variable_reset_test<D: VariableOutputReset + Clone>(
     buf.iter_mut().for_each(|b| *b = 0);
 
     // Test that it works when accepting the message in chunks
+    hasher2.reset();
     for n in 1..core::cmp::min(17, input.len()) {
         let mut hasher = D::new(output.len()).unwrap();
         for chunk in input.chunks(n) {
diff --git a/digest/src/dev/xof.rs b/digest/src/dev/xof.rs
index acd4c8769..70733d51e 100644
--- a/digest/src/dev/xof.rs
+++ b/digest/src/dev/xof.rs
@@ -27,6 +27,7 @@ pub fn xof_reset_test<D: ExtendableOutputReset + Default + Debug + Clone>(
     buf.iter_mut().for_each(|b| *b = 0);
 
     // Test that it works when accepting the message in chunks
+    hasher2.reset();
     for n in 1..core::cmp::min(17, input.len()) {
         let mut hasher = D::default();
         for chunk in input.chunks(n) {