diff --git a/src/build.sh b/src/build.sh
index 89fee67fc1..8bb71b2bc9 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -38,6 +38,7 @@ flags="$flags"'
   use_aura=false
   use_ozone=false
   use_gio=false
+  use_gtk=false
   use_platform_icu_alternatives=true
   use_glib=false