diff --git a/sys/kern/subr_firmware.c b/sys/kern/subr_firmware.c
index d616339f2c0..88b2e71ba8d 100644
--- a/sys/kern/subr_firmware.c
+++ b/sys/kern/subr_firmware.c
@@ -281,7 +281,7 @@ try_binary_file(const char *imagename, uint32_t flags)
 	int oflags;
 	size_t resid;
 	int error;
-	bool warn = flags & FIRMWARE_GET_NOWARN;
+	bool warn = (flags & FIRMWARE_GET_NOWARN) == 0;
 
 	/*
 	 * XXX TODO: Loop over some path instead of a single element path.