diff --git a/examples/nrf51/memory.x b/examples/nrf51/memory.x
index ad5f80292..98b3c792f 100644
--- a/examples/nrf51/memory.x
+++ b/examples/nrf51/memory.x
@@ -1,5 +1,5 @@
 MEMORY
 {
-  FLASH                    : ORIGIN = 0x00000000, LENGTH = 256K
-  RAM                      : ORIGIN = 0x20000000, LENGTH = 32K
+  FLASH                    : ORIGIN = 0x00000000, LENGTH = 128K
+  RAM                      : ORIGIN = 0x20000000, LENGTH = 16K
 }
diff --git a/tests/nrf51422/memory.x b/tests/nrf51422/memory.x
index c140005ce..a5881e66f 100644
--- a/tests/nrf51422/memory.x
+++ b/tests/nrf51422/memory.x
@@ -1,5 +1,5 @@
 MEMORY
 {
-  FLASH : ORIGIN = 0x00000000, LENGTH = 256K
-  RAM : ORIGIN = 0x20000000, LENGTH = 32K
+  FLASH : ORIGIN = 0x00000000, LENGTH = 128K
+  RAM : ORIGIN = 0x20000000, LENGTH = 16K
 }