diff --git a/README.md b/README.md
index fd8d779e3..0bd838b68 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Clock Signal ('CLK') is an emulator for tourists that seeks to be invisible. Use
 
 [Releases](https://github.com/TomHarte/CLK/releases) are hosted on GitHub.
 
-On the Mac it is a native Cocoa application. Under Linux, BSD and other UNIXes and UNIX-alikes it relies upon SDL 2.
+On the Mac it is a native Cocoa application; under Linux, BSD and other UNIXes and UNIX-alikes it can be built either with Qt or with SDL.
 
 So its aims are:
 * single-click load of any piece of source media for any supported platform;
@@ -83,3 +83,4 @@ Cycle-accurate emulation for the supported target machines is fairly trite; this
 |![Vic-20 Gridrunner](READMEImages/Vic20Gridrunner.png) | ![VIC-20 BASIC](READMEImages/Vic20BASIC.png)
 
 ![macOS Version](READMEImages/MultipleSystems.png)
+![Qt Version](READMEImages/MultipleSystems-Ubuntu.png)
diff --git a/READMEImages/MultipleSystems-Ubuntu.png b/READMEImages/MultipleSystems-Ubuntu.png
new file mode 100644
index 000000000..4e3b7e99a
Binary files /dev/null and b/READMEImages/MultipleSystems-Ubuntu.png differ