diff --git a/executables/espresso/projwfc.x.yml b/executables/espresso/projwfc.x.yml
index 68840403..a726c938 100644
--- a/executables/espresso/projwfc.x.yml
+++ b/executables/espresso/projwfc.x.yml
@@ -17,3 +17,8 @@ flavors:
     staticContext:
       projwfc:
         !include 'executables/espresso/staticContext/projwfc.x.yml#/projwfc'
+    requiredKeys:
+      - projwfc.prefix
+      - projwfc.outdir
+      - projwfc.degauss
+      - projwfc.deltaE