diff --git a/src/boomer.nim b/src/boomer.nim
index 40d2693..dc84179 100644
--- a/src/boomer.nim
+++ b/src/boomer.nim
@@ -15,9 +15,15 @@ import la
 import strutils
 import math
 import options
+import system
 
 type Shader = tuple[path, content: string]
 
+proc check_x11() =
+  if getEnv("XDG_SESSION_TYPE") != "x11":
+    echo "ERROR: Boomer doesn't work on Wayland..."
+    system.quit(1)
+
 proc readShader(file: string): Shader =
   when nimvm:
     result.path = file
@@ -180,6 +186,8 @@ proc main() =
   var windowed = false
   var delaySec = 0.0
 
+  check_x11()
+
   # TODO(#95): Make boomer optionally wait for some kind of event (for example, key press)
   block:
     proc versionQuit() =