diff --git a/browser_patches/webkit/build.sh b/browser_patches/webkit/build.sh
index eee83ed8fc..a5ee0ae6c8 100755
--- a/browser_patches/webkit/build.sh
+++ b/browser_patches/webkit/build.sh
@@ -18,7 +18,8 @@ fi
 if [[ "$(uname)" == "Darwin" ]]; then
   ./Tools/Scripts/build-webkit --release
 elif [[ "$(uname)" == "Linux" ]]; then
-  if ! [[ -d ./WebKitBuild ]]; then
+  # Check that WebKitBuild exists and is not empty.
+  if ! [[ (-d ./WebKitBuild) && (-n $(ls -1 ./WebKitBuild/)) ]]; then
     yes | DEBIAN_FRONTEND=noninteractive ./Tools/Scripts/update-webkitgtk-libs
   fi
   ./Tools/Scripts/build-webkit --gtk --release MiniBrowser