diff --git a/src/ngx_base_fetch.cc b/src/ngx_base_fetch.cc
index 2f86e0838..13358ba73 100644
--- a/src/ngx_base_fetch.cc
+++ b/src/ngx_base_fetch.cc
@@ -144,7 +144,7 @@ void NgxBaseFetch::HandleHeadersComplete() {
     }
   }
 
-  // For the IPRO lookup, supress notification of the nginx side here.
+  // For the IPRO lookup, suppress notification of the nginx side here.
   // If we send both this event and the one from done, nasty stuff will happen
   // if we loose the race with with the nginx side destructing this base fetch
   // instance (and thereby clearing the byte and its pending extraneous event.
diff --git a/src/ngx_fetch.cc b/src/ngx_fetch.cc
index 35de64df2..4654e9e9c 100644
--- a/src/ngx_fetch.cc
+++ b/src/ngx_fetch.cc
@@ -447,7 +447,7 @@ const char* NgxFetch::str_url() {
   return str_url_.c_str();
 }
 
-// This function should be called only once. The only argument is sucess or
+// This function should be called only once. The only argument is success or
 // not.
 void NgxFetch::CallbackDone(bool success) {
   ngx_log_error(NGX_LOG_DEBUG, log_, 0, "NgxFetch %p: CallbackDone: %s\n",
diff --git a/src/ngx_url_async_fetcher.h b/src/ngx_url_async_fetcher.h
index d13fa7f09..228c4edda 100644
--- a/src/ngx_url_async_fetcher.h
+++ b/src/ngx_url_async_fetcher.h
@@ -59,7 +59,7 @@ class NgxUrlAsyncFetcher : public UrlAsyncFetcher {
   ~NgxUrlAsyncFetcher();
 
   // It should be called in the module init_process callback function. Do some
-  // intializations which can't be done in the master process
+  // initializations which can't be done in the master process
   bool Init();
 
   // shutdown all the fetches.