diff --git a/sys/arm/arm/genassym.c b/sys/arm/arm/genassym.c
index ce7b88d748f..7f949e6c70b 100644
--- a/sys/arm/arm/genassym.c
+++ b/sys/arm/arm/genassym.c
@@ -143,5 +143,6 @@ ASSYM(P_PROFIL, P_PROFIL);
 ASSYM(TRAPFRAMESIZE, sizeof(struct trapframe));
 
 ASSYM(MAXCOMLEN, MAXCOMLEN);
+ASSYM(MAXCPU, MAXCPU);
 ASSYM(NIRQ, NIRQ);
 ASSYM(PCPU_SIZE, sizeof(struct pcpu));