diff --git a/edk2.spec b/edk2.spec
index 5069d64..d1dffc3 100644
--- a/edk2.spec
+++ b/edk2.spec
@@ -163,6 +163,7 @@ CC_FLAGS="${CC_FLAGS} --cmd-len=65536"
 OVMF_FLAGS="${CC_FLAGS}"
 OVMF_FLAGS="${OVMF_FLAGS} -D HTTP_BOOT_ENABLE"
 OVMF_FLAGS="${OVMF_FLAGS} -D NETWORK_IP6_ENABLE"
+OVMF_FLAGS="${OVMF_FLAGS} -D FD_SIZE_2MB"
 
 # ovmf + secure boot features
 OVMF_SB_FLAGS="${OVMF_FLAGS}"