diff --git a/lib/project.php b/lib/project.php
index 228f506..b23d125 100644
--- a/lib/project.php
+++ b/lib/project.php
@@ -10,11 +10,11 @@
 function getProjects($page = 1, $limit = 5)
 {
     if (!is_integer($page)) {
-        throw new InvalidArgumentException('The argument "page" must be an interger.');
+        throw new InvalidArgumentException('The argument "page" must be an integer.');
     }
 
     if (!is_integer($limit)) {
-        throw new InvalidArgumentException('The argument "limit" must be an interger.');
+        throw new InvalidArgumentException('The argument "limit" must be an integer.');
     }
 
     $from = ($page - 1) * $limit;
@@ -40,7 +40,7 @@ function getProjects($page = 1, $limit = 5)
 function getProject($id)
 {
     if (!is_integer($id)) {
-        throw new InvalidArgumentException('The argument "id" must be an interger.');
+        throw new InvalidArgumentException('The argument "id" must be an integer.');
     }
 
     $pdo = getDatabaseConnection();
@@ -61,7 +61,7 @@ function getProject($id)
 function getProjectNumberOfPages($maxPerPage)
 {
     if (!is_integer($maxPerPage)) {
-        throw new InvalidArgumentException('The argument "maxPerPage" must be an interger.');
+        throw new InvalidArgumentException('The argument "maxPerPage" must be an integer.');
     }
 
     $pdo = getDatabaseConnection();
@@ -98,11 +98,11 @@ function getCommentsByProject($id)
 function getProjectsPager($page, $numberOfPages) 
 {
     if (!is_integer($page)) {
-        throw new InvalidArgumentException('The argument "page" must be an interger.');
+        throw new InvalidArgumentException('The argument "page" must be an integer.');
     }
     
     if (!is_integer($numberOfPages)) {
-        throw new InvalidArgumentException('The argument "numberOfPages" must be an interger.');
+        throw new InvalidArgumentException('The argument "numberOfPages" must be an integer.');
     }
 
     $pages = [];