diff --git a/qrenderdoc/Code/Interface/QRDInterface.h b/qrenderdoc/Code/Interface/QRDInterface.h
index 11015c212..5cd67f4e1 100644
--- a/qrenderdoc/Code/Interface/QRDInterface.h
+++ b/qrenderdoc/Code/Interface/QRDInterface.h
@@ -1950,7 +1950,7 @@ be added to custom compiled shaders. See
 :meth:`~renderdoc.ReplayController.GetCustomShaderSourcePrefixes`.
 
 :return: A list of pairs, listing a prefix for each shader encoding referenced.
-:rtype: List[Tuple[ShaderEncoding,str]]
+:rtype: List[renderdoc.ShaderSourcePrefix]
 )");
   virtual rdcarray<ShaderSourcePrefix> CustomShaderSourcePrefixes() = 0;
 
diff --git a/renderdoc/api/replay/renderdoc_replay.h b/renderdoc/api/replay/renderdoc_replay.h
index 17cd1c5e4..fa3177bc9 100644
--- a/renderdoc/api/replay/renderdoc_replay.h
+++ b/renderdoc/api/replay/renderdoc_replay.h
@@ -655,7 +655,7 @@ If a shader encoding is not in the list, no prefix is required. This may be poss
 high level language such as :data:`ShaderEncoding.GLSL`.
 
 :return: A list of pairs, listing a prefix for each shader encoding referenced.
-:rtype: List[Tuple[ShaderEncoding,str]]
+:rtype: List[ShaderSourcePrefix]
 )");
   virtual rdcarray<ShaderSourcePrefix> GetCustomShaderSourcePrefixes() = 0;