diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 7fcadaaf330f9a149cb73301d8215aea04882281..47a01d5f26eaec1867472bd306cf86e63752c7b3 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -504,7 +504,7 @@ static int fpr_set_msa(struct task_struct *target,
 	int err;
 
 	BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t));
-	for (i = 0; i < NUM_FPU_REGS && *count >= sizeof(elf_fpreg_t); i++) {
+	for (i = 0; i < NUM_FPU_REGS && *count > 0; i++) {
 		err = user_regset_copyin(pos, count, kbuf, ubuf,
 					 &fpr_val, i * sizeof(elf_fpreg_t),
 					 (i + 1) * sizeof(elf_fpreg_t));