diff --git a/.config/linux/system/host/laptop/Configuration.nix b/.config/linux/system/host/laptop/Configuration.nix
index bb138c8..85bae85 100644
--- a/.config/linux/system/host/laptop/Configuration.nix
+++ b/.config/linux/system/host/laptop/Configuration.nix
@@ -3,7 +3,7 @@
 
 	# Use dedicated GPU by default.
 	environment.variables = {
-		DRI_PRIME = 1;
+		DRI_PRIME = "1";
 	};
 
 	# Filesystems.