diff --git a/src/decoder.rs b/src/decoder.rs
index 9ec15ad..a9315d3 100644
--- a/src/decoder.rs
+++ b/src/decoder.rs
@@ -116,8 +116,8 @@ impl HeatshrinkDecoder {
         self.bit_index = 0;
         self.state = HSDstate::TagBit;
         // memset self.buffer to 0
-        self.input_buffer.iter_mut().for_each(|m| *m = 0);
-        self.output_buffer.iter_mut().for_each(|m| *m = 0);
+        self.input_buffer.fill(0);
+        self.output_buffer.fill(0);
     }
 
     /// Add an input buffer to be processed/uncompressed
diff --git a/src/encoder.rs b/src/encoder.rs
index 34d993b..99063dc 100644
--- a/src/encoder.rs
+++ b/src/encoder.rs
@@ -166,11 +166,11 @@ impl HeatshrinkEncoder {
         self.bit_index = 8;
         self.state = HSEstate::NotFull;
         // memset self.buffer to 0
-        self.input_buffer.iter_mut().for_each(|m| *m = 0);
+        self.input_buffer.fill(0);
         #[cfg(feature = "heatshrink-use-index")]
         {
             // memset self.search_index to 0
-            self.search_index.iter_mut().for_each(|m| *m = None);
+            self.search_index.fill(None);
         }
     }