diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
index 9d9b1db73932fb32a36ae36e002999c1215a0d97..65448d5f26ecb63596a35e99f1ef51185dc378bb 100644
--- a/arch/arm/kernel/tcm.c
+++ b/arch/arm/kernel/tcm.c
@@ -30,8 +30,8 @@ extern char __itcm_start, __sitcm_text, __eitcm_text;
 extern char __dtcm_start, __sdtcm_data, __edtcm_data;
 
 /* These will be increased as we run */
-u32 dtcm_end = DTCM_OFFSET;
-u32 itcm_end = ITCM_OFFSET;
+static u32 dtcm_end = DTCM_OFFSET;
+static u32 itcm_end = ITCM_OFFSET;
 
 /*
  * TCM memory resources