diff --git a/sys/kern/imgact_elf.c b/sys/kern/imgact_elf.c
index 569c927c7a7..332bb221e74 100644
--- a/sys/kern/imgact_elf.c
+++ b/sys/kern/imgact_elf.c
@@ -2271,7 +2271,7 @@ __elfN(get_fpregset)(struct regset *rs, struct thread *td, void *buf,
 		fill_fpregs(td, fpregset);
 #endif
 	}
-	*sizep = sizeof(fpregset);
+	*sizep = sizeof(*fpregset);
 	return (true);
 }