diff --git a/Machines/ColecoVision/ColecoVision.cpp b/Machines/ColecoVision/ColecoVision.cpp
index 3bffc7fe1..a8853657c 100644
--- a/Machines/ColecoVision/ColecoVision.cpp
+++ b/Machines/ColecoVision/ColecoVision.cpp
@@ -160,6 +160,9 @@ class ConcreteMachine:
 					is_megacart_ = false;
 				}
 			}
+
+			// ColecoVisions have composite output only.
+			vdp_.set_display_type(Outputs::Display::DisplayType::CompositeColour);
 		}
 
 		~ConcreteMachine() {