diff --git a/libc/mem/calloc.c b/libc/mem/calloc.c
index df578353c..d70aefd3e 100644
--- a/libc/mem/calloc.c
+++ b/libc/mem/calloc.c
@@ -19,6 +19,8 @@
 #include "libc/mem/mem.h"
 #include "third_party/dlmalloc/dlmalloc.h"
 
+__static_yoink("free");
+
 /**
  * Allocates n * itemsize bytes, initialized to zero.
  *
@@ -31,4 +33,3 @@
 void *calloc(size_t n, size_t itemsize) {
   return dlcalloc(n, itemsize);
 }
-
diff --git a/libc/mem/malloc.c b/libc/mem/malloc.c
index 043a41aac..0d3793cf9 100644
--- a/libc/mem/malloc.c
+++ b/libc/mem/malloc.c
@@ -19,6 +19,8 @@
 #include "libc/mem/mem.h"
 #include "third_party/dlmalloc/dlmalloc.h"
 
+__static_yoink("free");
+
 /**
  * Allocates uninitialized memory.
  *
diff --git a/libc/mem/memalign.c b/libc/mem/memalign.c
index bdf8f9ff7..94129aaba 100644
--- a/libc/mem/memalign.c
+++ b/libc/mem/memalign.c
@@ -19,6 +19,8 @@
 #include "libc/mem/mem.h"
 #include "third_party/dlmalloc/dlmalloc.h"
 
+__static_yoink("free");
+
 /**
  * Allocates aligned memory.
  *
@@ -35,4 +37,3 @@
 void *memalign(size_t align, size_t bytes) {
   return dlmemalign(align, bytes);
 }
-
diff --git a/libc/mem/realloc.c b/libc/mem/realloc.c
index 6d7451a8e..b9a4fe7b4 100644
--- a/libc/mem/realloc.c
+++ b/libc/mem/realloc.c
@@ -19,6 +19,8 @@
 #include "libc/mem/mem.h"
 #include "third_party/dlmalloc/dlmalloc.h"
 
+__static_yoink("free");
+
 /**
  * Allocates / resizes / frees memory, e.g.
  *
@@ -60,4 +62,3 @@
 void *realloc(void *p, size_t n) {
   return dlrealloc(p, n);
 }
-
diff --git a/test/libc/stdio/fgetwc_test.c b/test/libc/stdio/fgetwc_test.c
index 1f0729282..4f6bd7ccd 100644
--- a/test/libc/stdio/fgetwc_test.c
+++ b/test/libc/stdio/fgetwc_test.c
@@ -16,6 +16,8 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/intrin/weaken.h"
+#include "libc/mem/mem.h"
 #include "libc/stdio/internal.h"
 #include "libc/testlib/testlib.h"