diff --git a/cpu/sam_common/ldscripts/sam3x8e.ld b/cpu/sam_common/ldscripts/sam3x8e.ld
index 7e6c13a169..6d3d137c41 100644
--- a/cpu/sam_common/ldscripts/sam3x8e.ld
+++ b/cpu/sam_common/ldscripts/sam3x8e.ld
@@ -21,7 +21,7 @@
 MEMORY
 {
     rom (rx)    : ORIGIN = 0x00080000, LENGTH = 512K
-    ram (rwx)   : ORIGIN = 0x20070000, LENGTH = 96K
+    ram (w!rx)  : ORIGIN = 0x20070000, LENGTH = 96K
 }
 
 INCLUDE cortexm_base.ld