diff --git a/newlib/libc/machine/riscv/memcpy.c b/newlib/libc/machine/riscv/memcpy.c
index 07e8e0076..4098f3ab1 100644
--- a/newlib/libc/machine/riscv/memcpy.c
+++ b/newlib/libc/machine/riscv/memcpy.c
@@ -51,9 +51,9 @@ small:
   const long *lb = (const long *)b;
   long *lend = (long *)((uintptr_t)end & ~msk);
 
-  if (unlikely (la < (lend - 8)))
+  if (unlikely (lend - la > 8))
     {
-      while (la < (lend - 8))
+      while (lend - la > 8)
 	{
 	  long b0 = *lb++;
 	  long b1 = *lb++;