diff --git a/changelog.md b/changelog.md
index 2bab3a2..7e7b33a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,10 @@
 - Custom query API
 - Standardize dialogs
 
+## [3.3.0-rc.19] 2023-05-09
+### Fixed
+- Case folding when targeting WM_CLASS
+
 ## [3.3.0-rc.18] 2023-05-09
 ### Changed
 - More robust targeting of Steam client
diff --git a/dzgui.sh b/dzgui.sh
index 6cd39b3..e7ea656 100755
--- a/dzgui.sh
+++ b/dzgui.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 set -o pipefail
-version=3.3.0-rc.18
+version=3.3.0-rc.19
 
 aid=221100
 game="dayz"
@@ -563,7 +563,7 @@ is_steam_running(){
 	if [[ $(is_beta) -eq 0 ]]; then
 		wmctrl -l | grep "Steam Games List"
 	else
-		wmctrl -ilx | awk '$3 == "Steam.Steam"'
+		wmctrl -ilx | awk 'tolower($3) == "steam.steam"'
 	fi
 }
 connect(){