diff --git a/src/thread.c b/src/thread.c
index d96500e2435..feb20ef5a7f 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -855,7 +855,9 @@ run_thread (void *state)
 #ifndef HAVE_MPS
        xfree (c);
 #else
+#if !(defined DARWIN_OS && defined __arm64__)
        igc_xfree (c);
+#endif
 #endif
      }