diff --git a/linker/linker_phdr.cpp b/linker/linker_phdr.cpp
index b24be92..54354a8 100644
--- a/linker/linker_phdr.cpp
+++ b/linker/linker_phdr.cpp
@@ -213,7 +213,8 @@
 
 bool ElfReader::VerifyElfHeader() {
   if (memcmp(header_.e_ident, ELFMAG, SELFMAG) != 0) {
-    DL_ERR("\"%s\" has bad ELF magic", name_.c_str());
+    DL_ERR("\"%s\" has bad ELF magic: %02x%02x%02x%02x", name_.c_str(),
+           header_.e_ident[0], header_.e_ident[1], header_.e_ident[2], header_.e_ident[3]);
     return false;
   }
 
diff --git a/tests/dlext_test.cpp b/tests/dlext_test.cpp
index ec27932..1e3d9c8 100644
--- a/tests/dlext_test.cpp
+++ b/tests/dlext_test.cpp
@@ -173,7 +173,7 @@
   extinfo.library_fd_offset = 0;
   handle_ = android_dlopen_ext("libname_ignored", RTLD_NOW, &extinfo);
   ASSERT_TRUE(handle_ == nullptr);
-  ASSERT_EQ("dlopen failed: \"" + lib_path + "\" has bad ELF magic", dlerror());
+  ASSERT_EQ("dlopen failed: \"" + lib_path + "\" has bad ELF magic: 504b0304", dlerror());
 
   // Check if dlsym works after unsuccessful dlopen().
   // Supply non-exiting one to make linker visit every soinfo.