diff --git a/tools/releasetools/sign_target_files_apks b/tools/releasetools/sign_target_files_apks
index 00693b8..6ed21de 100755
--- a/tools/releasetools/sign_target_files_apks
+++ b/tools/releasetools/sign_target_files_apks
@@ -237,6 +237,8 @@
         value = value.split()
         if len(value) == 2 and value[1].endswith("-keys"):
           value = value[0]
+        else:
+          value = " ".join(value)
       line = key + "=" + value
     if line != original_line:
       print "  replace: ", original_line