diff --git a/sim/simflash/src/lib.rs b/sim/simflash/src/lib.rs
index 2c797dd..43b6232 100644
--- a/sim/simflash/src/lib.rs
+++ b/sim/simflash/src/lib.rs
@@ -83,7 +83,7 @@
 }
 
 /// An emulated flash device.  It is represented as a block of bytes, and a list of the sector
-/// mapings.
+/// mappings.
 #[derive(Clone)]
 pub struct SimFlash {
     data: Vec<u8>,