diff --git a/src/mem.cpp b/src/mem.cpp
index f0708ff..31ee3bc 100644
--- a/src/mem.cpp
+++ b/src/mem.cpp
@@ -1,7 +1,6 @@
 // Mostly taken from the raddebugger -- thanks, Ryan.
 
 #define align_pow2(x, b) (((x) + (b) - 1) & ( ~((b) - 1)))
-#define SLLStackPop_N(f,next) ((f)=(f)->next)
 
 #ifdef ENABLE_ASAN
 #define asan_poison_memory_region(mem, cmt) __asan_poison_memory_region(mem, cmt)