1 files changed, 4 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/gigabeat-s/mmu-imx31.h b/firmware/target/arm/imx31/gigabeat-s/mmu-imx31.h
index 3a33cc3cd4..55a03f9292 100644
--- a/firmware/target/arm/imx31/gigabeat-s/mmu-imx31.h
+++ b/firmware/target/arm/imx31/gigabeat-s/mmu-imx31.h
@@ -16,6 +16,10 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
+#ifndef MMU_IMX31_H
+#define MMU_IMX31_H
 
 void memory_init(void);
 void set_page_tables(void);
+
+#endif /* MMU_IMX31_H */