diff --git a/src/directory/ram_directory.rs b/src/directory/ram_directory.rs
index 3f798485d..32d44e184 100644
--- a/src/directory/ram_directory.rs
+++ b/src/directory/ram_directory.rs
@@ -55,7 +55,7 @@ impl Seek for VecWriter {
 impl Write for VecWriter {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         self.is_flushed = false;
-        try!(self.data.write(buf));
+        try!(self.data.write_all(buf));
         Ok(buf.len())
     }
 
diff --git a/src/fastfield/delete.rs b/src/fastfield/delete.rs
index a899af963..83a631a38 100644
--- a/src/fastfield/delete.rs
+++ b/src/fastfield/delete.rs
@@ -15,7 +15,7 @@ pub fn write_delete_bitset(delete_bitset: &BitSet, writer: &mut WritePtr) -> io:
             byte |= 1 << shift;
         }
         if shift == 7 {
-            writer.write(&[byte])?;
+            writer.write_all(&[byte])?;
             shift = 0;
             byte = 0;
         }
@@ -24,7 +24,7 @@ pub fn write_delete_bitset(delete_bitset: &BitSet, writer: &mut WritePtr) -> io:
         }
     }
     if max_doc % 8 > 0 {
-        writer.write(&[byte])?;
+        writer.write_all(&[byte])?;
     }
     writer.flush()
 }