diff --git a/cpu/mc1322x/mc1322x.lds b/cpu/mc1322x/mc1322x.lds
index 2e6dddf75..95fcb2665 100644
--- a/cpu/mc1322x/mc1322x.lds
+++ b/cpu/mc1322x/mc1322x.lds
@@ -18,7 +18,7 @@ FIQ_STACK_SIZE = 256;
 SVC_STACK_SIZE = 256;
 ABT_STACK_SIZE = 16;
 UND_STACK_SIZE = 16;
-HEAP_SIZE = 2048;
+HEAP_SIZE = 4096;
 
   /* Read-only sections, merged into text segment: */
   PROVIDE (__executable_start = 0x00400000); . = 0x00400000;