diff --git a/arch/arm/src/armv6-m/CMakeLists.txt b/arch/arm/src/armv6-m/CMakeLists.txt
index 7c198fd454f..ccbebc9b490 100644
--- a/arch/arm/src/armv6-m/CMakeLists.txt
+++ b/arch/arm/src/armv6-m/CMakeLists.txt
@@ -23,6 +23,7 @@
 set(SRCS
     arm_exception.S
     arm_saveusercontext.S
+    arm_cpuinfo.c
     arm_doirq.c
     arm_hardfault.c
     arm_initialstate.c