diff --git a/android/build.gradle b/android/build.gradle
index 37e7b7613..a09d04b9c 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -21,12 +21,12 @@ def DEFAULT_MIN_SDK_VERSION = 16
 def DEFAULT_TARGET_SDK_VERSION = 27
 
 android {
-  compileSdkVersion rootProject.ext.hasProperty('compileSdkVersion') ? rootProject.ext.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
-  buildToolsVersion rootProject.ext.hasProperty('buildToolsVersion') ? rootProject.ext.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
+  compileSdkVersion rootProject.ext.has('compileSdkVersion') ? rootProject.ext.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
+  buildToolsVersion rootProject.ext.has('buildToolsVersion') ? rootProject.ext.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
 
   defaultConfig {
-    minSdkVersion rootProject.ext.hasProperty('minSdkVersion') ? rootProject.ext.minSdkVersion : DEFAULT_MIN_SDK_VERSION
-    targetSdkVersion rootProject.ext.hasProperty('targetSdkVersion') ? rootProject.ext.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
+    minSdkVersion rootProject.ext.has('minSdkVersion') ? rootProject.ext.minSdkVersion : DEFAULT_MIN_SDK_VERSION
+    targetSdkVersion rootProject.ext.has('targetSdkVersion') ? rootProject.ext.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
     versionCode 1
     versionName "1.0"
   }