diff --git a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Linux/LinuxCppCompileStep.cs b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Linux/LinuxCppCompileStep.cs
index 28e543de4..6197c0adc 100644
--- a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Linux/LinuxCppCompileStep.cs
+++ b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Linux/LinuxCppCompileStep.cs
@@ -12,7 +12,7 @@ namespace Microsoft.DotNet.Tools.Compiler.Native
 
         // TODO: debug/release support
         private readonly string [] _cLibsFlags = { "-lm", "-ldl"};
-        private readonly string [] _cflags = { "-g", "-lstdc++", "-lrt", "-Wno-invalid-offsetof", "-pthread"};
+        private readonly string [] _cflags = { "-g", "-lstdc++", "-lrt", "-Wno-invalid-offsetof", "-lpthread"};
 
         public IEnumerable<string> CompilerArgs { get; set; }
 
diff --git a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacCppCompileStep.cs b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacCppCompileStep.cs
index 64fec18ef..a628535b6 100644
--- a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacCppCompileStep.cs
+++ b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacCppCompileStep.cs
@@ -16,7 +16,7 @@ namespace Microsoft.DotNet.Tools.Compiler.Native
         public const string InputExtension = ".cpp";
 
         // TODO: debug/release support
-        private readonly string [] _cflags = { "-g", "-lstdc++", "-Wno-invalid-offsetof", "-pthread"};
+        private readonly string [] _cflags = { "-g", "-lstdc++", "-Wno-invalid-offsetof", "-lpthread"};
         
         // Link to iconv APIs
         private const string LibFlags = "-liconv";
diff --git a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacRyuJitCompileStep.cs b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacRyuJitCompileStep.cs
index 6a7ecb13c..4a44bd459 100644
--- a/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacRyuJitCompileStep.cs
+++ b/src/dotnet/commands/dotnet-compile-native/IntermediateCompilation/Mac/MacRyuJitCompileStep.cs
@@ -15,7 +15,7 @@ namespace Microsoft.DotNet.Tools.Compiler.Native
         private IEnumerable<string> CompilerArgs;
 
         // TODO: debug/release support
-        private readonly string [] _cflags = { "-g", "-lstdc++", "-Wno-invalid-offsetof", "-pthread", "-ldl", "-lm", "-liconv" };
+        private readonly string [] _cflags = { "-g", "-lstdc++", "-Wno-invalid-offsetof", "-lpthread", "-ldl", "-lm", "-liconv" };
 
         private readonly string[] _ilcSdkLibs = 
             {