diff --git a/src/include/ImageJPEG.cpp b/src/include/ImageJPEG.cpp
index 9fa508aa..1eb0720f 100644
--- a/src/include/ImageJPEG.cpp
+++ b/src/include/ImageJPEG.cpp
@@ -420,10 +420,14 @@ bool Image::drawJpegChunk(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t
                 val = RGB3BIT(r, g, b);
             }
 
-            if (invert)
-                val = 7 - val;
-            //            if (_imagePtrJpeg->getDisplayMode() == INKPLATE_1BIT)
-            //                val = (~val >> 2) & 1;
+            if (_imagePtrJpeg->getDisplayMode() == INKPLATE_1BIT) {
+                val = (~val >> 2) & 1;
+                if (invert)
+                    val = 1 - val;
+            } else {
+                if (invert)
+                    val = 7 - val;
+            }
 
             _imagePtrJpeg->writePixel(x + i, y + j, val);
 #endif