diff --git a/lld/ELF/InputFiles.cpp b/lld/ELF/InputFiles.cpp
index 01ebf0a494c8..2e07869a3348 100644
--- a/lld/ELF/InputFiles.cpp
+++ b/lld/ELF/InputFiles.cpp
@@ -35,6 +35,14 @@ template <class ELFT>
 ELFFileBase<ELFT>::ELFFileBase(Kind K, MemoryBufferRef M)
     : InputFile(K, M), ELFObj(MB.getBuffer(), ECRAII().getEC()) {}
 
+template <class ELFT>
+ELFKind ELFFileBase<ELFT>::getELFKind() {
+  using llvm::support::little;
+  if (ELFT::Is64Bits)
+    return ELFT::TargetEndianness == little ? ELF64LEKind : ELF64BEKind;
+  return ELFT::TargetEndianness == little ? ELF32LEKind : ELF32BEKind;
+}
+
 template <class ELFT>
 typename ELFFileBase<ELFT>::Elf_Sym_Range
 ELFFileBase<ELFT>::getSymbolsHelper(bool Local) {
diff --git a/lld/ELF/InputFiles.h b/lld/ELF/InputFiles.h
index 06f88f880b61..95c8f0f5128b 100644
--- a/lld/ELF/InputFiles.h
+++ b/lld/ELF/InputFiles.h
@@ -59,17 +59,7 @@ public:
     return K == ObjectKind || K == SharedKind;
   }
 
-  static ELFKind getELFKind() {
-    if (!ELFT::Is64Bits) {
-      if (ELFT::TargetEndianness == llvm::support::little)
-        return ELF32LEKind;
-      return ELF32BEKind;
-    }
-    if (ELFT::TargetEndianness == llvm::support::little)
-      return ELF64LEKind;
-    return ELF64BEKind;
-  }
-
+  static ELFKind getELFKind();
   const llvm::object::ELFFile<ELFT> &getObj() const { return ELFObj; }
   llvm::object::ELFFile<ELFT> &getObj() { return ELFObj; }