diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c
index 1595c0714a..ae3c57392b 100644
--- a/drivers/i2c/soft_i2c.c
+++ b/drivers/i2c/soft_i2c.c
@@ -30,6 +30,9 @@
 #include <ioports.h>
 #include <asm/io.h>
 #endif
+#if defined(CONFIG_AVR32)
+#include <asm/arch/portmux.h>
+#endif
 #if defined(CONFIG_AT91FAMILY)
 #include <asm/io.h>
 #include <asm/arch/hardware.h>