diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
index b766aaf..54835d9 100644
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@@ -77,7 +77,9 @@ android {
 
     buildTypes {
         release {
-            signingConfig = signingConfigs.getByName("debug")
+            // signingConfig is set per flavor in productFlavors above.
+            // Setting null here lets the flavor-level config take effect.
+            signingConfig = null
         }
     }
 }