diff --git a/renderdoc/driver/shaders/dxbc/dxbc_container.cpp b/renderdoc/driver/shaders/dxbc/dxbc_container.cpp
index 4520dcd5c..e77fe6908 100644
--- a/renderdoc/driver/shaders/dxbc/dxbc_container.cpp
+++ b/renderdoc/driver/shaders/dxbc/dxbc_container.cpp
@@ -2816,7 +2816,7 @@ void DXBCContainer::ProcessSourceInfo(const byte *chunkContents, uint32_t chunkS
           flags.flags[cmdlineIdx].value += name;
           if(value[0] != 0)
           {
-            flags.flags[cmdlineIdx].value += "=";
+            flags.flags[cmdlineIdx].value += " ";
             flags.flags[cmdlineIdx].value += value;
           }
         }