diff --git a/arch/arm/src/sam3u/sam3u_pio.c b/arch/arm/src/sam3u/sam3u_pio.c
index ab3d746ba31..29eb5e833b1 100755
--- a/arch/arm/src/sam3u/sam3u_pio.c
+++ b/arch/arm/src/sam3u/sam3u_pio.c
@@ -80,7 +80,7 @@
 static inline uintptr_t sam3u_gpiobase(uint16_t cfgset)
 {
   int port = (cfgset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
-  return SAM3U_PION_BASE(port >> GPIO_PORT_SHIFT);
+  return SAM3U_PION_BASE(port);
 }
 
 /****************************************************************************