diff --git a/cpu/cortexm_common/ldscripts/cortexm_base.ld b/cpu/cortexm_common/ldscripts/cortexm_base.ld
index c05affdc5f1a..1ed11d22445a 100644
--- a/cpu/cortexm_common/ldscripts/cortexm_base.ld
+++ b/cpu/cortexm_common/ldscripts/cortexm_base.ld
@@ -108,15 +108,15 @@ SECTIONS
     /* stack section */
     .stack (NOLOAD):
     {
+        _puf_sram_len = DEFINED(_puf_sram_len) ? _puf_sram_len : 0 ;
+        KEEP (*(.puf_stack))
+        . = ALIGN(_puf_sram_len);
+        _pstack = .;
         . = ALIGN(8);
         _sstack = .;
         KEEP (*(.isr_stack))
         . = ALIGN(8);
         _estack = .;
-        _puf_sram_len = DEFINED(_puf_sram_len) ? _puf_sram_len : 0 ;
-        KEEP (*(.puf_stack))
-        . = ALIGN(_puf_sram_len);
-        _pstack = .;
     } > ram
 
     .relocate :