diff --git a/README.md b/README.md
index 4244596e..723be10b 100644
--- a/README.md
+++ b/README.md
@@ -279,6 +279,13 @@ Options:
                                   renamed upon import.  By default, photos are
                                   exported with the the original name they had
                                   before import.
+  --convert-to-jpeg               Convert all non-jpeg images (e.g. RAW, HEIC,
+                                  PNG, etc) to JPEG upon export.  Only works
+                                  if your Mac has a GPU.
+  --jpeg-quality FLOAT RANGE      Value in range 0.0 to 1.0 to use with
+                                  --convert-to-jpeg. A value of 1.0 specifies
+                                  best quality, a value of 0.0 specifies
+                                  maximum compression. Defaults to 1.0.
   --sidecar FORMAT                Create sidecar for each photo exported;
                                   valid FORMAT values: xmp, json; --sidecar
                                   json: create JSON sidecar useable by
diff --git a/osxphotos/__main__.py b/osxphotos/__main__.py
index 12b4a2f0..a1f2233e 100644
--- a/osxphotos/__main__.py
+++ b/osxphotos/__main__.py
@@ -1234,7 +1234,7 @@ def query(
     "--convert-to-jpeg",
     is_flag=True,
     help="Convert all non-jpeg images (e.g. RAW, HEIC, PNG, etc) "
-    "to JPEG upon export.",
+    "to JPEG upon export.  Only works if your Mac has a GPU.",
 )
 @click.option(
     "--jpeg-quality",