diff --git a/arch/arm/src/a1x/Make.defs b/arch/arm/src/a1x/Make.defs
index 82ba23bc52..b00b349381 100644
--- a/arch/arm/src/a1x/Make.defs
+++ b/arch/arm/src/a1x/Make.defs
@@ -98,6 +98,9 @@ endif
 ifeq ($(CONFIG_ARCH_KERNEL_STACK),y)
 CMN_CSRCS += arm_addrenv_kstack.c
 endif
+ifeq ($(CONFIG_MM_SHM),y)
+CMN_CSRCS += arm_addrenv_shm.c
+endif
 endif
 
 ifeq ($(CONFIG_MM_PGALLOC),y)
diff --git a/arch/arm/src/sama5/Make.defs b/arch/arm/src/sama5/Make.defs
index ba8012837e..9b1c192c2c 100644
--- a/arch/arm/src/sama5/Make.defs
+++ b/arch/arm/src/sama5/Make.defs
@@ -1,4 +1,5 @@
 ############################################################################
+############################################################################
 # arch/arm/sama5/Make.defs
 #
 #   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
@@ -100,6 +101,9 @@ endif
 ifeq ($(CONFIG_ARCH_KERNEL_STACK),y)
 CMN_CSRCS += arm_addrenv_kstack.c
 endif
+ifeq ($(CONFIG_MM_SHM),y)
+CMN_CSRCS += arm_addrenv_shm.c
+endif
 endif
 
 ifeq ($(CONFIG_MM_PGALLOC),y)