Index: head/sys/boot/efi/libefi/Makefile
===================================================================
--- head/sys/boot/efi/libefi/Makefile
+++ head/sys/boot/efi/libefi/Makefile
@@ -26,6 +26,7 @@
 # of a short. There's no good cast to use here so just ignore the
 # warnings for now.
 CWARNFLAGS.efinet.c+=	-Wno-format
+CWARNFLAGS.env.c+=	-Wno-format
 
 .if ${MACHINE_CPUARCH} == "aarch64"
 CFLAGS+=	-msoft-float -mgeneral-regs-only
Index: head/sys/boot/efi/libefi/env.c
===================================================================
--- head/sys/boot/efi/libefi/env.c
+++ head/sys/boot/efi/libefi/env.c
@@ -94,14 +94,16 @@
 	status = RS->GetVariable(varnamearg, matchguid, &attr,
 	    &datasz, NULL);
 	if (status != EFI_BUFFER_TOO_SMALL) {
-		printf("Can't get the variable: error %#lx\n", status);
+		printf("Can't get the variable: error %#lx\n",
+		    EFI_ERROR_CODE(status));
 		return (CMD_ERROR);
 	}
 	data = malloc(datasz);
 	status = RS->GetVariable(varnamearg, matchguid, &attr,
 	    &datasz, data);
 	if (status != EFI_SUCCESS) {
-		printf("Can't get the variable: error %#lx\n", status);
+		printf("Can't get the variable: error %#lx\n",
+		    EFI_ERROR_CODE(status));
 		return (CMD_ERROR);
 	}
 	uuid_to_string((uuid_t *)matchguid, &str, &uuid_status);