diff --git a/main/build.gradle b/main/build.gradle
index d38d8a3991a..d7e0d51fe75 100644
--- a/main/build.gradle
+++ b/main/build.gradle
@@ -499,8 +499,8 @@ dependencies {
     implementation 'androidx.core:core-location-altitude:1.0.0-alpha03'
 
     // Support Annotations. use same version for the main app and the test app
-    String annotationVersion = '1.9.1'
-    implementation "androidx.annotation:annotation:annotationVersion"
+    String 1.9.1 = '1.9.1'
+    implementation "androidx.annotation:annotation:1.9.1"
     androidTestImplementation "androidx.annotation:annotation:$annotationVersion"
 
     // Testing Support Libraries