diff --git a/arch/mips/lib/delay.c b/arch/mips/lib/delay.c
index f69c6b569eb3..6b3b1de9dcae 100644
--- a/arch/mips/lib/delay.c
+++ b/arch/mips/lib/delay.c
@@ -43,7 +43,7 @@ void __udelay(unsigned long us)
 {
 	unsigned int lpj = current_cpu_data.udelay_val;
 
-	__delay((us * 0x000010c7 * HZ * lpj) >> 32);
+	__delay((us * 0x000010c7ull * HZ * lpj) >> 32);
 }
 EXPORT_SYMBOL(__udelay);
 
@@ -51,6 +51,6 @@ void __ndelay(unsigned long ns)
 {
 	unsigned int lpj = current_cpu_data.udelay_val;
 
-	__delay((us * 0x00000005 * HZ * lpj) >> 32);
+	__delay((ns * 0x00000005ull * HZ * lpj) >> 32);
 }
 EXPORT_SYMBOL(__ndelay);