diff --git a/test/tools/llvm-objcopy/ELF/basic-only-keep.test b/test/tools/llvm-objcopy/ELF/basic-only-section.test
similarity index 91%
rename from test/tools/llvm-objcopy/ELF/basic-only-keep.test
rename to test/tools/llvm-objcopy/ELF/basic-only-section.test
index 2f1c5e0a5ae5..536a0fc4cca9 100644
--- a/test/tools/llvm-objcopy/ELF/basic-only-keep.test
+++ b/test/tools/llvm-objcopy/ELF/basic-only-section.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -only-keep=.test %t %t2
+# RUN: llvm-objcopy -only-section=.test %t %t2
 # RUN: llvm-objcopy -j .test %t %t3
 # RUN: llvm-readobj -file-headers -sections %t2 | FileCheck %s
 # RUN: diff %t2 %t3
diff --git a/test/tools/llvm-objcopy/ELF/dump-section.test b/test/tools/llvm-objcopy/ELF/dump-section.test
index cf9accdfd512..8e66f65e04a7 100644
--- a/test/tools/llvm-objcopy/ELF/dump-section.test
+++ b/test/tools/llvm-objcopy/ELF/dump-section.test
@@ -1,6 +1,6 @@
 # RUN: yaml2obj %s > %t
 # RUN: llvm-objcopy -O binary -j .text %t %t2
-# RUN: llvm-objcopy -O binary -only-keep .text %t %t3
+# RUN: llvm-objcopy -O binary -only-section .text %t %t3
 # RUN: llvm-objcopy --dump-section .text=%t4 %t %t5
 # RUN: llvm-objcopy --dump-section .foo=%t6 %t %t7
 # RUN: not llvm-objcopy --dump-section .bar=%t8 %t %t9 2>&1 | FileCheck %s --check-prefix=NOBITS
diff --git a/test/tools/llvm-objcopy/ELF/explicit-only-keep-remove.test b/test/tools/llvm-objcopy/ELF/explicit-only-section-remove.test
similarity index 89%
rename from test/tools/llvm-objcopy/ELF/explicit-only-keep-remove.test
rename to test/tools/llvm-objcopy/ELF/explicit-only-section-remove.test
index 10d49e10c09c..15a315906abf 100644
--- a/test/tools/llvm-objcopy/ELF/explicit-only-keep-remove.test
+++ b/test/tools/llvm-objcopy/ELF/explicit-only-section-remove.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -R=.test -only-keep=.test %t %t2
+# RUN: llvm-objcopy -R=.test -only-section=.test %t %t2
 # RUN: llvm-readobj -file-headers -sections %t2 | FileCheck %s
 
 !ELF
diff --git a/test/tools/llvm-objcopy/ELF/keep-only-keep.test b/test/tools/llvm-objcopy/ELF/keep-only-section.test
similarity index 90%
rename from test/tools/llvm-objcopy/ELF/keep-only-keep.test
rename to test/tools/llvm-objcopy/ELF/keep-only-section.test
index 7c546c8f6834..38aa52cc70f3 100644
--- a/test/tools/llvm-objcopy/ELF/keep-only-keep.test
+++ b/test/tools/llvm-objcopy/ELF/keep-only-section.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -keep-section=.test2 -only-keep=.test %t %t2
+# RUN: llvm-objcopy -keep-section=.test2 -only-section=.test %t %t2
 # RUN: llvm-objcopy -j .test -keep-section=.test2 %t %t3
 # RUN: llvm-readobj -file-headers -sections %t2 | FileCheck %s
 # RUN: diff %t2 %t3
diff --git a/test/tools/llvm-objcopy/ELF/only-keep-many.test b/test/tools/llvm-objcopy/ELF/only-section-many.test
similarity index 100%
rename from test/tools/llvm-objcopy/ELF/only-keep-many.test
rename to test/tools/llvm-objcopy/ELF/only-section-many.test
diff --git a/test/tools/llvm-objcopy/ELF/only-keep-remove-strtab.test b/test/tools/llvm-objcopy/ELF/only-section-remove-strtab.test
similarity index 87%
rename from test/tools/llvm-objcopy/ELF/only-keep-remove-strtab.test
rename to test/tools/llvm-objcopy/ELF/only-section-remove-strtab.test
index f6885c8e131c..e336181d9fa4 100644
--- a/test/tools/llvm-objcopy/ELF/only-keep-remove-strtab.test
+++ b/test/tools/llvm-objcopy/ELF/only-section-remove-strtab.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -R .symtab -R .strtab -only-keep=.test %t %t2
+# RUN: llvm-objcopy -R .symtab -R .strtab -only-section=.test %t %t2
 # RUN: llvm-objcopy -j .test -R .strtab -R .symtab %t %t3
 # RUN: llvm-readobj -file-headers -sections %t2 | FileCheck %s
 # RUN: diff %t2 %t3
diff --git a/test/tools/llvm-objcopy/ELF/only-keep-strip-non-alloc.test b/test/tools/llvm-objcopy/ELF/only-section-strip-non-alloc.test
similarity index 86%
rename from test/tools/llvm-objcopy/ELF/only-keep-strip-non-alloc.test
rename to test/tools/llvm-objcopy/ELF/only-section-strip-non-alloc.test
index bad00228492a..f61b4ae664c6 100644
--- a/test/tools/llvm-objcopy/ELF/only-keep-strip-non-alloc.test
+++ b/test/tools/llvm-objcopy/ELF/only-section-strip-non-alloc.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -strip-non-alloc -only-keep=.test %t %t2
+# RUN: llvm-objcopy -strip-non-alloc -only-section=.test %t %t2
 # RUN: llvm-readobj -file-headers -sections %t2 | FileCheck %s
 
 !ELF
diff --git a/test/tools/llvm-objcopy/ELF/strip-sections-only-keep.test b/test/tools/llvm-objcopy/ELF/strip-sections-only-section.test
similarity index 87%
rename from test/tools/llvm-objcopy/ELF/strip-sections-only-keep.test
rename to test/tools/llvm-objcopy/ELF/strip-sections-only-section.test
index 2c9400cf34c1..2c14a7272e3e 100644
--- a/test/tools/llvm-objcopy/ELF/strip-sections-only-keep.test
+++ b/test/tools/llvm-objcopy/ELF/strip-sections-only-section.test
@@ -1,5 +1,5 @@
 # RUN: yaml2obj %s > %t
-# RUN: llvm-objcopy -strip-sections -only-keep=.test %t %t2
+# RUN: llvm-objcopy -strip-sections -only-section=.test %t %t2
 # RUN: od -Ax -t x1 %t2 | FileCheck %s
 # RUN: od -Ax -t c  %t2 | FileCheck %s -check-prefix=TEXT
 
diff --git a/tools/llvm-objcopy/CopyConfig.cpp b/tools/llvm-objcopy/CopyConfig.cpp
index 73611778c936..24f0e29d4926 100644
--- a/tools/llvm-objcopy/CopyConfig.cpp
+++ b/tools/llvm-objcopy/CopyConfig.cpp
@@ -315,8 +315,8 @@ DriverConfig parseObjcopyOptions(ArrayRef<const char *> ArgsArr) {
     Config.ToRemove.push_back(Arg->getValue());
   for (auto Arg : InputArgs.filtered(OBJCOPY_keep_section))
     Config.KeepSection.push_back(Arg->getValue());
-  for (auto Arg : InputArgs.filtered(OBJCOPY_only_keep))
-    Config.OnlyKeep.push_back(Arg->getValue());
+  for (auto Arg : InputArgs.filtered(OBJCOPY_only_section))
+    Config.OnlySection.push_back(Arg->getValue());
   for (auto Arg : InputArgs.filtered(OBJCOPY_add_section))
     Config.AddSection.push_back(Arg->getValue());
   for (auto Arg : InputArgs.filtered(OBJCOPY_dump_section))
diff --git a/tools/llvm-objcopy/CopyConfig.h b/tools/llvm-objcopy/CopyConfig.h
index f6585116cdf9..ce6ead80b7c5 100644
--- a/tools/llvm-objcopy/CopyConfig.h
+++ b/tools/llvm-objcopy/CopyConfig.h
@@ -61,7 +61,7 @@ struct CopyConfig {
   std::vector<StringRef> AddSection;
   std::vector<StringRef> DumpSection;
   std::vector<StringRef> KeepSection;
-  std::vector<StringRef> OnlyKeep;
+  std::vector<StringRef> OnlySection;
   std::vector<StringRef> SymbolsToGlobalize;
   std::vector<StringRef> SymbolsToKeep;
   std::vector<StringRef> SymbolsToLocalize;
diff --git a/tools/llvm-objcopy/ELF/ELFObjcopy.cpp b/tools/llvm-objcopy/ELF/ELFObjcopy.cpp
index 7430b19c772b..3b9f62e9b5fe 100644
--- a/tools/llvm-objcopy/ELF/ELFObjcopy.cpp
+++ b/tools/llvm-objcopy/ELF/ELFObjcopy.cpp
@@ -415,10 +415,10 @@ static void handleArgs(const CopyConfig &Config, Object &Obj,
     };
 
   // Explicit copies:
-  if (!Config.OnlyKeep.empty()) {
+  if (!Config.OnlySection.empty()) {
     RemovePred = [&Config, RemovePred, &Obj](const SectionBase &Sec) {
       // Explicitly keep these sections regardless of previous removes.
-      if (is_contained(Config.OnlyKeep, Sec.Name))
+      if (is_contained(Config.OnlySection, Sec.Name))
         return false;
 
       // Allow all implicit removes.
diff --git a/tools/llvm-objcopy/ObjcopyOpts.td b/tools/llvm-objcopy/ObjcopyOpts.td
index 73985ef8f625..1f7e64e4091c 100644
--- a/tools/llvm-objcopy/ObjcopyOpts.td
+++ b/tools/llvm-objcopy/ObjcopyOpts.td
@@ -78,9 +78,9 @@ defm redefine_symbol
       MetaVarName<"old=new">;
 defm keep_section : Eq<"keep-section", "Keep <section>">,
                     MetaVarName<"section">;
-defm only_keep : Eq<"only-keep", "Remove all but <section>">,
-                 MetaVarName<"section">;
-def j : JoinedOrSeparate<["-"], "j">, Alias<only_keep>;
+defm only_section : Eq<"only-section", "Remove all but <section>">,
+                    MetaVarName<"section">;
+def j : JoinedOrSeparate<["-"], "j">, Alias<only_section>;
 defm add_section
     : Eq<"add-section",
          "Make a section named <section> with the contents of <file>.">,