diff --git a/src/storage/allocator.rs b/src/storage/allocator.rs
index 17592c0..61406e4 100644
--- a/src/storage/allocator.rs
+++ b/src/storage/allocator.rs
@@ -137,10 +137,9 @@ impl<M: Memory> ChunkPtrAllocator<M> {
     pub fn set_chunk_size(&mut self, new_size: usize) -> Result<(), Error> {
         // new size must be one of the available values
 
-        if ChunkSize::VALUES
+        if !ChunkSize::VALUES
             .iter()
-            .find(|size| **size as usize == new_size)
-            .is_none()
+            .any(|size| *size as usize == new_size)
         {
             return Err(Error::IncompatibleChunkSize);
         }
diff --git a/src/test_utils.rs b/src/test_utils.rs
index 6e9559e..31281c0 100644
--- a/src/test_utils.rs
+++ b/src/test_utils.rs
@@ -51,14 +51,13 @@ pub fn test_fs_transient() -> FileSystem {
 pub fn test_fs_setups(virtual_file_name: &str) -> Vec<FileSystem> {
     use crate::runtime::types::ChunkSize;
 
-    let mut result = Vec::new();
-
-    result.push(test_fs());
-    result.push(test_fs_v1());
-    result.push(test_fs_custom_chunk_size(ChunkSize::CHUNK4K));
-    result.push(test_fs_custom_chunk_size(ChunkSize::CHUNK64K));
-
-    result.push(test_fs_transient());
+    let mut result = vec![
+        test_fs(),
+        test_fs_v1(),
+        test_fs_custom_chunk_size(ChunkSize::CHUNK4K),
+        test_fs_custom_chunk_size(ChunkSize::CHUNK64K),
+        test_fs_transient(),
+    ];
 
     if !virtual_file_name.is_empty() {
         let mut fs = test_fs();