diff --git a/cpu/riscv_common/thread_arch.c b/cpu/riscv_common/thread_arch.c
index a9127a21ed..b1332c730d 100644
--- a/cpu/riscv_common/thread_arch.c
+++ b/cpu/riscv_common/thread_arch.c
@@ -185,6 +185,7 @@ void heap_stats(void)
     extern char _sheap;     /* defined in linker script */
     extern char _eheap;     /* defined in linker script */
 
+    /* cppcheck-suppress comparePointers */
     long int heap_size = &_eheap - &_sheap;
     struct mallinfo minfo = mallinfo();