diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 86f21391eb097..e7f798d55fbcc 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1497,6 +1497,10 @@ static void probe_pcache(void)
 			c->dcache.flags |= MIPS_CACHE_ALIASES;
 	}
 
+	/* Physically indexed caches don't suffer from virtual aliasing */
+	if (c->dcache.flags & MIPS_CACHE_PINDEX)
+		c->dcache.flags &= ~MIPS_CACHE_ALIASES;
+
 	switch (current_cpu_type()) {
 	case CPU_20KC:
 		/*