diff --git a/MixinDebug/AppGroup Server/GCDWebDAVServer/GCDWebDAVServer.m b/MixinDebug/AppGroup Server/GCDWebDAVServer/GCDWebDAVServer.m
index eaac9aaa12..9f38130609 100644
--- a/MixinDebug/AppGroup Server/GCDWebDAVServer/GCDWebDAVServer.m	
+++ b/MixinDebug/AppGroup Server/GCDWebDAVServer/GCDWebDAVServer.m	
@@ -189,7 +189,7 @@ - (GCDWebServerResponse*)performGET:(GCDWebServerRequest*)request {
 
   NSString* itemName = [absolutePath lastPathComponent];
   if (([itemName hasPrefix:@"."] && !_allowHiddenItems) || (!isDirectory && ![self _checkFileExtension:itemName])) {
-    return [GCDWebServerErrorResponse responseWithClientError:kGCDWebServerHTTPStatusCode_Forbidden message:@"Downlading item name \"%@\" is not allowed", itemName];
+    return [GCDWebServerErrorResponse responseWithClientError:kGCDWebServerHTTPStatusCode_Forbidden message:@"Downloading item name \"%@\" is not allowed", itemName];
   }
 
   // Because HEAD requests are mapped to GET ones, we need to handle directories but it's OK to return nothing per http://webdav.org/specs/rfc4918.html#rfc.section.9.4
@@ -451,7 +451,7 @@ - (void)_addPropertyResponseForItem:(NSString*)itemPath resource:(NSString*)reso
         [xmlString appendFormat:@"<D:creationdate>%@</D:creationdate>", GCDWebServerFormatISO8601((NSDate*)[attributes fileCreationDate])];
       }
 
-      if ((properties & kDAVProperty_LastModified) && isFile && [attributes objectForKey:NSFileModificationDate]) {  // Last modification date is not useful for directories as it changes implicitely and 'Last-Modified' header is not provided for directories anyway
+      if ((properties & kDAVProperty_LastModified) && isFile && [attributes objectForKey:NSFileModificationDate]) {  // Last modification date is not useful for directories as it changes implicitly and 'Last-Modified' header is not provided for directories anyway
         [xmlString appendFormat:@"<D:getlastmodified>%@</D:getlastmodified>", GCDWebServerFormatRFC822((NSDate*)[attributes fileModificationDate])];
       }
 
diff --git a/MixinDebug/AppGroup Server/GCDWebServer/Core/GCDWebServerConnection.h b/MixinDebug/AppGroup Server/GCDWebServer/Core/GCDWebServerConnection.h
index 4d59b9f1f5..0b2cdff723 100644
--- a/MixinDebug/AppGroup Server/GCDWebServer/Core/GCDWebServerConnection.h	
+++ b/MixinDebug/AppGroup Server/GCDWebServer/Core/GCDWebServerConnection.h	
@@ -165,7 +165,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (GCDWebServerResponse*)overrideResponse:(GCDWebServerResponse*)response forRequest:(GCDWebServerRequest*)request;
 
 /**
- *  This method is called if any error happens while validing or processing
+ *  This method is called if any error happens while validating or processing
  *  the request or if no GCDWebServerResponse was generated during processing.
  *
  *  @warning If the request was invalid (e.g. the HTTP headers were malformed),
diff --git a/MixinDebug/AppGroup Server/GCDWebServer/Responses/GCDWebServerDataResponse.h b/MixinDebug/AppGroup Server/GCDWebServer/Responses/GCDWebServerDataResponse.h
index e5121c3362..0d558b05f6 100644
--- a/MixinDebug/AppGroup Server/GCDWebServer/Responses/GCDWebServerDataResponse.h	
+++ b/MixinDebug/AppGroup Server/GCDWebServer/Responses/GCDWebServerDataResponse.h	
@@ -91,7 +91,7 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  *  Initializes a data response from an HTML template encoded using UTF-8.
  *
- *  All occurences of "%variable%" within the HTML template are replaced with
+ *  All occurrences of "%variable%" within the HTML template are replaced with
  *  their corresponding values.
  */
 - (nullable instancetype)initWithHTMLTemplate:(NSString*)path variables:(NSDictionary<NSString*, NSString*>*)variables;