diff --git a/extensions/media2/build.gradle b/extensions/media2/build.gradle
index da70210bd6..dc10ef6170 100644
--- a/extensions/media2/build.gradle
+++ b/extensions/media2/build.gradle
@@ -35,7 +35,7 @@ ext {
 apply from: '../../javadoc_library.gradle'
 
 ext {
-    releaseArtifact = 'extension-media2'
+    releaseArtifactId = 'extension-media2'
     releaseDescription = 'Media2 extension for ExoPlayer.'
 }
 apply from: '../../publish.gradle'
diff --git a/extensions/mediasession/build.gradle b/extensions/mediasession/build.gradle
index 9b812911ab..056526e8a1 100644
--- a/extensions/mediasession/build.gradle
+++ b/extensions/mediasession/build.gradle
@@ -26,7 +26,7 @@ ext {
 apply from: '../../javadoc_library.gradle'
 
 ext {
-    releaseArtifact = 'extension-mediasession'
+    releaseArtifactId = 'extension-mediasession'
     releaseDescription = 'Media session extension for ExoPlayer.'
 }
 apply from: '../../publish.gradle'
diff --git a/library/all/build.gradle b/library/all/build.gradle
index 56414c14bf..4ec8373e2f 100644
--- a/library/all/build.gradle
+++ b/library/all/build.gradle
@@ -24,7 +24,7 @@ dependencies {
 }
 
 ext {
-    releaseArtifact = 'exoplayer'
+    releaseArtifactId = 'exoplayer'
     releaseDescription = 'The ExoPlayer library (all modules).'
 }
 apply from: '../../publish.gradle'