diff --git a/tests/test_media_primitives.c b/tests/test_media_primitives.c
index 83a7a02a..2589cada 100644
--- a/tests/test_media_primitives.c
+++ b/tests/test_media_primitives.c
@@ -27,7 +27,9 @@ static pthread_barrier_t *post_barrier;
 extern FILE *__real_fopen(const char*, const char*);
 extern FILE *__real_fdopen(int, const char*);
 extern size_t __real_fread(void*, size_t, size_t, FILE*);
+#ifdef __GLIBC__
 extern size_t __real___fread_chk(void*, size_t, size_t, size_t, FILE*);
+#endif
 extern size_t __real_fwrite(const void*, size_t, size_t, FILE*);
 extern int __real_ferror(FILE*), __real_fflush(FILE*), __real_fclose(FILE*);
 extern int __real_rename(const char*, const char*), __real_RAND_bytes(unsigned char*, int);
@@ -59,10 +61,12 @@ size_t __wrap_fread(void *data, size_t size, size_t count, FILE *file) {
     return __real_fread(data, size, count, file);
 }
 /* _FORTIFY_SOURCE при -Og вызывает checked-вариант; ошибка должна внедряться и в sanitizer-сборке. */
+#ifdef __GLIBC__
 size_t __wrap___fread_chk(void *data, size_t capacity, size_t size, size_t count, FILE *file) {
     if (file == input_file && inject(READ)) { read_failed = 1; return 0; }
     return __real___fread_chk(data, capacity, size, count, file);
 }
+#endif
 int __wrap_ferror(FILE *file) { return file == input_file && read_failed ? 1 : __real_ferror(file); }
 size_t __wrap_fwrite(const void *data, size_t size, size_t count, FILE *file) {
     return file == output_file && inject(WRITE) ? 0 : __real_fwrite(data, size, count, file);