diff --git a/api/go1.6.txt b/api/go1.6.txt
index b78d9d72ce..cdf47ed728 100644
--- a/api/go1.6.txt
+++ b/api/go1.6.txt
@@ -135,7 +135,6 @@ pkg debug/elf, type Chdr32 struct, Size uint32
 pkg debug/elf, type Chdr32 struct, Type uint32
 pkg debug/elf, type Chdr64 struct
 pkg debug/elf, type Chdr64 struct, Addralign uint64
-pkg debug/elf, type Chdr64 struct, Reserved uint32
 pkg debug/elf, type Chdr64 struct, Size uint64
 pkg debug/elf, type Chdr64 struct, Type uint32
 pkg debug/elf, type CompressionType int
diff --git a/src/debug/elf/elf.go b/src/debug/elf/elf.go
index 0c79b7a02f..f53ba0079a 100644
--- a/src/debug/elf/elf.go
+++ b/src/debug/elf/elf.go
@@ -2006,7 +2006,7 @@ type Dyn64 struct {
 // ELF64 Compression header.
 type Chdr64 struct {
 	Type      uint32
-	Reserved  uint32
+	_         uint32 /* Reserved. */
 	Size      uint64
 	Addralign uint64
 }