diff --git a/Gems/Atom/RHI/Code/Source/RHI.Edit/ShaderCompilerArguments.cpp b/Gems/Atom/RHI/Code/Source/RHI.Edit/ShaderCompilerArguments.cpp
index 3a04bf6b88..09cd1c125e 100644
--- a/Gems/Atom/RHI/Code/Source/RHI.Edit/ShaderCompilerArguments.cpp
+++ b/Gems/Atom/RHI/Code/Source/RHI.Edit/ShaderCompilerArguments.cpp
@@ -164,7 +164,7 @@ namespace AZ
                 arguments += " -Zi";  // Generate debug information
                 arguments += " -Zss"; // Compute Shader Hash considering source information
             }
-            arguments += m_dxcAdditionalFreeArguments;
+            arguments += " " + m_dxcAdditionalFreeArguments;
             return arguments;
         }
     }