diff --git a/herbie/models/gefs.py b/herbie/models/gefs.py
index 8c94df43..47cb710d 100644
--- a/herbie/models/gefs.py
+++ b/herbie/models/gefs.py
@@ -153,7 +153,7 @@ def template(self):
         # - Members 1-4 are the perturbation members
         if self.member == 0:
             member = f"c{self.member:02d}"
-        elif self.member > 0 and self.member < max_member_size:
+        elif self.member > 0 and self.member <= max_member_size:
             member = f"p{self.member:02d}"
         else:
             raise ValueError(f"GEFS 'member' must be within range of [0 - {max_member_size}].")