diff --git a/third_party/eigen/Eigen/src/Core/util/ConfigureVectorization.h b/third_party/eigen/Eigen/src/Core/util/ConfigureVectorization.h
index 68765d4b2..df2d46832 100644
--- a/third_party/eigen/Eigen/src/Core/util/ConfigureVectorization.h
+++ b/third_party/eigen/Eigen/src/Core/util/ConfigureVectorization.h
@@ -401,11 +401,11 @@
   #include <hip/hip_fp16.h>
 
   #define HIP_PATCH_WITH_NEW_FP16 18215
-  #if (HIP_VERSION_PATCH < HIP_PATCH_WITH_NEW_FP16)
-    #define EIGEN_HAS_OLD_HIP_FP16
-    // Old HIP implementation does not have a explicit typedef for "half2"
-    typedef __half2 half2;
-  #endif
+//  #if (HIP_VERSION_PATCH < HIP_PATCH_WITH_NEW_FP16)
+//    #define EIGEN_HAS_OLD_HIP_FP16
+//    // Old HIP implementation does not have a explicit typedef for "half2"
+//    typedef __half2 half2;
+//  #endif
 
 #endif