diff --git a/utils/build_libs.sh b/utils/build_libs.sh
index 4a838b8..e3c453a 100755
--- a/utils/build_libs.sh
+++ b/utils/build_libs.sh
@@ -80,6 +80,7 @@ for platform in $PLATFORMS; do
     esac
 
     TARGET_LIB_DIR=${PROJECT_LIB_DIR}/${platform_ne}
+    rm -f ${TARGET_LIB_DIR}
     mkdir -p ${TARGET_LIB_DIR}
 
     # make sure it doesn't pick up the project's app manifest