diff --git a/prepare.py b/prepare.py
index fe64e39f3..760ea3f4d 100755
--- a/prepare.py
+++ b/prepare.py
@@ -337,6 +337,10 @@ release: java-clean build copy-libs
 
 generate-sdk: liblinphone-android-sdk
 
+generate-javadoc:
+\t./gradlew -b libLinphoneAndroidSdk.gradle androidJavadocsJar
+\t./gradlew -b libLinphoneAndroidSdk.gradle sourcesJar
+
 liblinphone-android-sdk: java-clean build copy-libs $(TOPDIR)/res/raw/rootca.pem
 \t./gradlew -b libLinphoneAndroidSdk.gradle androidJavadocsJar
 \t./gradlew -b libLinphoneAndroidSdk.gradle sourcesJar