diff --git a/util/linux/thread_info.h b/util/linux/thread_info.h
index 8b94effe..9f60bd3e 100644
--- a/util/linux/thread_info.h
+++ b/util/linux/thread_info.h
@@ -15,6 +15,7 @@
 #ifndef CRASHPAD_UTIL_LINUX_THREAD_INFO_H_
 #define CRASHPAD_UTIL_LINUX_THREAD_INFO_H_
 
+#include <features.h>
 #include <stdint.h>
 #include <sys/user.h>
 
@@ -274,7 +275,7 @@ union FloatContext {
                 "Size mismatch");
 #elif defined(ARCH_CPU_ARMEL)
   static_assert(sizeof(f32_t::fpregs) == sizeof(user_fpregs), "Size mismatch");
-#if !defined(__GLIBC__)
+#if defined(__BIONIC__)
   static_assert(sizeof(f32_t::vfp) == sizeof(user_vfp), "Size mismatch");
 #endif
 #elif defined(ARCH_CPU_ARM64)