diff --git a/README.md b/README.md
index 61517cd..05aabe3 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ upstream.
 
 ## QuickStart: building and testing
 
-These instructions work on Linux, you may have to adjust for your plaform.
+These instructions work on Linux, you may have to adjust for your platform.
 
 To build the code in this repository, you need a clone of the LLVM/MLIR git
 repository:
diff --git a/include/mlir-hlo/Dialect/mhlo/IR/hlo_ops_base.td b/include/mlir-hlo/Dialect/mhlo/IR/hlo_ops_base.td
index c30adde..572a2f9 100644
--- a/include/mlir-hlo/Dialect/mhlo/IR/hlo_ops_base.td
+++ b/include/mlir-hlo/Dialect/mhlo/IR/hlo_ops_base.td
@@ -1382,7 +1382,7 @@ class BASE_HLO_BitcastOp {
 
   string description = [{
     This op changes the shape of the input in the way that the physical
-    arranggment of elements are unchanged.
+    arrangement of elements are unchanged.
 
     However, the op needs layout information to make sense of "physical
     arrangement of elements". Layout support in MHLO is currently under