diff --git a/api/src/foreign.rs b/api/src/foreign.rs
index 88d147192..4da86bb47 100644
--- a/api/src/foreign.rs
+++ b/api/src/foreign.rs
@@ -32,7 +32,7 @@ use crate::{rest::*, BlockListing};
 use std::sync::Weak;
 
 /// Main interface into all node API functions.
-/// Node APIs are split into two seperate blocks of functionality
+/// Node APIs are split into two separate blocks of functionality
 /// called the ['Owner'](struct.Owner.html) and ['Foreign'](struct.Foreign.html) APIs
 ///
 /// Methods in this API are intended to be 'single use'.
diff --git a/api/src/owner.rs b/api/src/owner.rs
index b63609c22..2ec02c12c 100644
--- a/api/src/owner.rs
+++ b/api/src/owner.rs
@@ -27,7 +27,7 @@ use std::net::SocketAddr;
 use std::sync::Weak;
 
 /// Main interface into all node API functions.
-/// Node APIs are split into two seperate blocks of functionality
+/// Node APIs are split into two separate blocks of functionality
 /// called the ['Owner'](struct.Owner.html) and ['Foreign'](struct.Foreign.html) APIs
 ///
 /// Methods in this API are intended to be 'single use'.
diff --git a/doc/pow/pow.md b/doc/pow/pow.md
index 52ef3607a..3de4728d1 100644
--- a/doc/pow/pow.md
+++ b/doc/pow/pow.md
@@ -113,10 +113,10 @@ Now, (hopefully) armed with a basic understanding of what the Cuckoo Cycle algor
 
 ## Mining in Grin
 
-The Cuckoo Cycle outlined above forms the basis of Grin's mining process, however Grin uses two variantion of Cuckoo Cycle in tandem with several other systems to create a Proof-of-Work.
+The Cuckoo Cycle outlined above forms the basis of Grin's mining process, however Grin uses two variations of Cuckoo Cycle in tandem with several other systems to create a Proof-of-Work.
 
 1. for GPUs: Cuckaroo on 2^29 edges
-    * Tweaked every 6 months to maitain ASIC resistance.
+    * Tweaked every 6 months to maintain ASIC resistance.
     * 90% of rewards at launch, linearly decreasing to 0% in 2 years.
     * Variant of Cuckoo that enforces so-called ``mean'' mining.
     * Takes 5.5GB of memory (perhaps 4GB with slowdown).