diff --git a/package/bullet/bullet.mk b/package/bullet/bullet.mk
index 7ff8195c85..36aaa157e1 100644
--- a/package/bullet/bullet.mk
+++ b/package/bullet/bullet.mk
@@ -16,8 +16,8 @@ BULLET_CONF_OPTS = -DBUILD_UNIT_TESTS=OFF \
 	-DBUILD_BULLET2_DEMOS=OFF \
 	-DBUILD_BULLET3=OFF
 
-# extras needs dlfcn.h and threads
-ifeq ($(BR2_STATIC_LIBS):$(BR2_TOOLCHAIN_HAS_THREADS),:y)
+# extras needs dlfcn.h and NPTL (pthread_barrier_init)
+ifeq ($(BR2_STATIC_LIBS):$(BR2_TOOLCHAIN_HAS_THREADS_NPTL),:y)
 BULLET_CONF_OPTS += -DBUILD_EXTRAS=ON
 else
 BULLET_CONF_OPTS += -DBUILD_EXTRAS=OFF