diff --git a/sys/compat/lindebugfs/lindebugfs.c b/sys/compat/lindebugfs/lindebugfs.c
--- a/sys/compat/lindebugfs/lindebugfs.c
+++ b/sys/compat/lindebugfs/lindebugfs.c
@@ -130,7 +130,7 @@
 	rc = d->dm_fops->open(&vn, &lf);
 	if (rc < 0) {
 #ifdef INVARIANTS
-		printf("%s:%d open failed with %d\n", __FUNCTION__, __LINE__, rc);
+		printf("%s:%d open failed with %d\n", __func__, __LINE__, rc);
 #endif
 		return (-rc);
 	}
@@ -165,7 +165,7 @@
 
 	if (rc < 0) {
 #ifdef INVARIANTS
-		printf("%s:%d read/write failed with %d\n", __FUNCTION__, __LINE__, rc);
+		printf("%s:%d read/write failed with %d\n", __func__, __LINE__, rc);
 #endif
 		return (-rc);
 	}