diff --git a/kas/corstone1000-base.yml b/kas/corstone1000-base.yml
index 85706dc0..161312fb 100644
--- a/kas/corstone1000-base.yml
+++ b/kas/corstone1000-base.yml
@@ -1,6 +1,9 @@
 header:
   version: 11
 
+env:
+  DISPLAY: ""
+
 distro: poky-tiny
 
 defaults:
diff --git a/kas/corstone500.yml b/kas/corstone500.yml
index d40b59df..c27cb5f5 100644
--- a/kas/corstone500.yml
+++ b/kas/corstone500.yml
@@ -3,6 +3,9 @@ header:
   includes:
     - kas/fvp-eula.yml
 
+env:
+  DISPLAY: ""
+
 distro: poky-tiny
 
 defaults:
diff --git a/kas/fvp-baser-aemv8r64-bsp.yml b/kas/fvp-baser-aemv8r64-bsp.yml
index 9f16a3f9..366ab87e 100644
--- a/kas/fvp-baser-aemv8r64-bsp.yml
+++ b/kas/fvp-baser-aemv8r64-bsp.yml
@@ -3,6 +3,9 @@ header:
   includes:
     - kas/fvp-eula.yml
 
+env:
+  DISPLAY: ""
+
 distro: poky
 machine: fvp-baser-aemv8r64