diff --git a/dlls/d3dcompiler_43/compiler.c b/dlls/d3dcompiler_43/compiler.c
index 1eb07ce907b..5159db84322 100644
--- a/dlls/d3dcompiler_43/compiler.c
+++ b/dlls/d3dcompiler_43/compiler.c
@@ -193,7 +193,7 @@ static void *wpp_open_mem(const char *filename, int type)
         return NULL;
     }
     hr = ID3DInclude_Open(current_include,
-                          type ? D3D_INCLUDE_SYSTEM : D3D_INCLUDE_LOCAL,
+                          type ? D3D_INCLUDE_LOCAL : D3D_INCLUDE_SYSTEM,
                           filename, parent_include, (LPCVOID *)&desc->buffer,
                           &desc->size);
     if(FAILED(hr))
diff --git a/libs/wpp/preproc.c b/libs/wpp/preproc.c
index 99934d69944..b9d8443cb9e 100644
--- a/libs/wpp/preproc.c
+++ b/libs/wpp/preproc.c
@@ -517,7 +517,7 @@ void *pp_open_include(const char *name, const char *parent_name, char **newpath)
 
     if (!(path = wpp_callbacks->lookup(name, parent_name, includepath,
                                        nincludepath))) return NULL;
-    fp = wpp_callbacks->open(path, parent_name == NULL ? 1 : 0);
+    fp = wpp_callbacks->open(path, !!parent_name);
 
     if (fp)
     {