diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
index fbb1af4dbe22..7a9570a686f4 100644
--- a/clang/lib/Driver/ToolChains/Gnu.cpp
+++ b/clang/lib/Driver/ToolChains/Gnu.cpp
@@ -694,7 +694,7 @@ void tools::gnutools::Assembler::ConstructJob(Compilation &C,
       CmdArgs.push_back("--compress-debug-sections");
     } else {
       StringRef Value = A->getValue();
-      if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") {
+      if (Value == "none" || Value == "zlib") {
         CmdArgs.push_back(
             Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
       } else {
diff --git a/clang/test/Driver/compress-noias.c b/clang/test/Driver/compress-noias.c
index 40ec80acd761..d0d7ef34e70b 100644
--- a/clang/test/Driver/compress-noias.c
+++ b/clang/test/Driver/compress-noias.c
@@ -27,10 +27,6 @@
 // RUN: %clang -### -target i686-unknown-linux-gnu -fno-integrated-as -gz=zlib -c %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_ZLIB %s
 // CHECK-OPT_GZ_EQ_ZLIB: "--compress-debug-sections=zlib"
 
-// RUN: %clang -### -target i686-unknown-linux-gnu -fno-integrated-as -gz=zlib-gnu -x assembler -c %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_ZLIB_GNU %s
-// RUN: %clang -### -target i686-unknown-linux-gnu -fno-integrated-as -gz=zlib-gnu -c %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_ZLIB_GNU %s
-// CHECK-OPT_GZ_EQ_ZLIB_GNU: "--compress-debug-sections=zlib-gnu"
-
 // RUN: %clang -### -target i686-unknown-linux-gnu -fno-integrated-as -gz=invalid -x assembler -c %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_INVALID %s
 // RUN: %clang -### -target i686-unknown-linux-gnu -fno-integrated-as -gz=invalid -c %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_INVALID %s
 // CHECK-OPT_GZ_EQ_INVALID: error: unsupported argument 'invalid' to option 'gz='
diff --git a/clang/tools/driver/cc1as_main.cpp b/clang/tools/driver/cc1as_main.cpp
index db3288d75281..6459d1534b39 100644
--- a/clang/tools/driver/cc1as_main.cpp
+++ b/clang/tools/driver/cc1as_main.cpp
@@ -228,7 +228,6 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
         llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
             .Case("none", llvm::DebugCompressionType::None)
             .Case("zlib", llvm::DebugCompressionType::Z)
-            .Case("zlib-gnu", llvm::DebugCompressionType::GNU)
             .Default(llvm::DebugCompressionType::None);
   }