diff --git a/src/bin/beacon.rs b/src/bin/beacon.rs
index 762ca50..0e3c303 100644
--- a/src/bin/beacon.rs
+++ b/src/bin/beacon.rs
@@ -55,7 +55,7 @@ fn main() {
 
         let mut seed = [0u32; 8];
         for i in 0..8 {
-            seed[i] = digest.read_u32::<BigEndian>().expect("digest is large enough for this to work");
+            seed[i] = digest.read_u32::<BigEndian>().expect("digest is not large enough for this to work");
         }
 
         ChaChaRng::from_seed(&seed)
@@ -64,7 +64,7 @@ fn main() {
     // Try to load `./challenge` from disk.
     let reader = OpenOptions::new()
                             .read(true)
-                            .open("challenge").expect("unable open `./challenge` in this directory");
+                            .open("challenge").expect("unable to open `./challenge` in this directory");
 
     {
         let metadata = reader.metadata().expect("unable to get filesystem metadata for `./challenge`");
diff --git a/src/bin/compute.rs b/src/bin/compute.rs
index 955dd83..1e1bf7f 100644
--- a/src/bin/compute.rs
+++ b/src/bin/compute.rs
@@ -41,7 +41,7 @@ fn main() {
         // Interpret the first 32 bytes of the digest as 8 32-bit words
         let mut seed = [0u32; 8];
         for i in 0..8 {
-            seed[i] = digest.read_u32::<BigEndian>().expect("digest is large enough for this to work");
+            seed[i] = digest.read_u32::<BigEndian>().expect("digest is not large enough for this to work");
         }
 
         ChaChaRng::from_seed(&seed)