diff --git a/cpu/cortexm_common/Makefile b/cpu/cortexm_common/Makefile
index cbf1ed7f2e..e09377cd1e 100644
--- a/cpu/cortexm_common/Makefile
+++ b/cpu/cortexm_common/Makefile
@@ -1,6 +1,3 @@
-# see https://github.com/RIOT-OS/RIOT/issues/5775.
-SRC_NOLTO += vectors_cortexm.c
-
 DIRS = periph
 
 include $(RIOTBASE)/Makefile.base
diff --git a/cpu/cortexm_common/thread_arch.c b/cpu/cortexm_common/thread_arch.c
index 40ea9eb5e7..b7ebf7fe21 100644
--- a/cpu/cortexm_common/thread_arch.c
+++ b/cpu/cortexm_common/thread_arch.c
@@ -372,6 +372,8 @@ void __attribute__((naked)) __attribute__((used)) isr_pendsv(void) {
                                            * causes end of exception*/
 #endif
     /* {r0-r3,r12,LR,PC,xPSR,s0-s15,FPSCR} are restored automatically on exception return */
+     ".ltorg                           \n" /* literal pool needed to access
+                                            * sched_active_thread */
     );
 }