diff --git a/src/runtime/builtin_fp16.cc b/src/runtime/builtin_fp16.cc
index 64723ffbf5a2..ba3dddb7ae49 100644
--- a/src/runtime/builtin_fp16.cc
+++ b/src/runtime/builtin_fp16.cc
@@ -37,7 +37,7 @@ TVM_DLL TVM_WEAK float __gnu_h2f_ieee(uint16_t a) {
   return __extendXfYf2__<uint16_t, uint16_t, 10, float, uint32_t, 23>(a);
 }
 
-TVM_DLL uint16_t __truncdfhf2(double a) {
+TVM_DLL TVM_WEAK uint16_t __truncdfhf2(double a) {
   return __truncXfYf2__<double, uint64_t, 52, uint16_t, uint16_t, 10>(a);
 }