diff --git a/invokeai/app/invocations/controlnet_image_processors.py b/invokeai/app/invocations/controlnet_image_processors.py
index 5b15981caa..1ef5352db6 100644
--- a/invokeai/app/invocations/controlnet_image_processors.py
+++ b/invokeai/app/invocations/controlnet_image_processors.py
@@ -144,7 +144,7 @@ class ImageProcessorInvocation(BaseInvocation, WithMetadata, WithBoard):
         return image
 
     def invoke(self, context: InvocationContext) -> ImageOutput:
-        raw_image = context.images.get_pil(self.image.image_name)
+        raw_image = context.images.get_pil(self.image.image_name, "RGB")
         # image type should be PIL.PngImagePlugin.PngImageFile ?
         processed_image = self.run_processor(raw_image)
 
diff --git a/invokeai/app/services/shared/invocation_context.py b/invokeai/app/services/shared/invocation_context.py
index 1395427a97..d217a865af 100644
--- a/invokeai/app/services/shared/invocation_context.py
+++ b/invokeai/app/services/shared/invocation_context.py
@@ -194,13 +194,20 @@ class ImagesInterface(InvocationContextInterface):
             node_id=self._context_data.invocation.id,
         )
 
-    def get_pil(self, image_name: str) -> Image:
+    def get_pil(self, image_name: str, format: str | None = None) -> Image:
         """
         Gets an image as a PIL Image object.
 
         :param image_name: The name of the image to get.
+        :param format: The color format to convert the image to. If None, the original format is used.
         """
-        return self._services.images.get_pil_image(image_name)
+        image = self._services.images.get_pil_image(image_name)
+        if format and format != image.mode:
+            try:
+                image = image.convert(format)
+            except ValueError:
+                self._services.logger.warning(f"Could not convert image from {image.mode} to {format}. Using original format.")
+        return image
 
     def get_metadata(self, image_name: str) -> Optional[MetadataField]:
         """