diff --git a/metadata/org.gege.caldavsyncadapter.txt b/metadata/org.gege.caldavsyncadapter.txt
index edb738417a..4f2402790a 100644
--- a/metadata/org.gege.caldavsyncadapter.txt
+++ b/metadata/org.gege.caldavsyncadapter.txt
@@ -25,7 +25,8 @@ Build Version:1.6,7,v1.6,subdir=CalDAVSyncAdapter,prebuild=\
 sed -i '/proguard/d' project.properties
 Build Version:1.7,8,v1.7,subdir=CalDAVSyncAdapter,prebuild=\
 sed -i '/proguard/d' project.properties
-Build Version:1.8,15,v1.8,subdir=CalDAVSyncAdapter
+Build Version:1.8,15,v1.8,subdir=CalDAVSyncAdapter,prebuild=\
+	sed -i 's@/libs/@libs/@g' proguard-project.txt
 
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