diff --git a/lib/lib_display/ILI9341-gemu-1.0/ILI9341_2.cpp b/lib/lib_display/ILI9341-gemu-1.0/ILI9341_2.cpp
index f8a365f8e..873894c5c 100644
--- a/lib/lib_display/ILI9341-gemu-1.0/ILI9341_2.cpp
+++ b/lib/lib_display/ILI9341-gemu-1.0/ILI9341_2.cpp
@@ -557,7 +557,7 @@ void ILI9341_2::DisplayOnff(int8_t on) {
 
 void ILI9341_2::invertDisplay(boolean i) {
   ILI9341_2_CS_LOW
-  writecmd(i ? ILI9341_2_INVOFF : ILI9341_2_INVON);
+  writecmd(i ? ILI9341_2_INVON : ILI9341_2_INVOFF);
   ILI9341_2_CS_HIGH
 }