diff --git a/build.gradle b/build.gradle
index bae5c7a..24cb488 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,9 +44,9 @@ ext {
     libs = "${buildDir}/libs"
 
     if (Os.isFamily(Os.FAMILY_WINDOWS)) {
-        operatinSystem = "windows"
+        operatingSystem = "windows"
     } else {
-        operatinSystem = "unix"
+        operatingSystem = "unix"
     }
 }
 
@@ -114,7 +114,7 @@ if (project.hasProperty("hostname")) {
  */
 def shell(String command) {
     def proc
-    if (operatinSystem == "unix") {
+    if (operatingSystem == "unix") {
         proc = ['bash', '-c', command].execute()
     } else {
         proc = ["cmd", "/c", command].execute()