diff --git a/gsmartcontrol/NEWS b/gsmartcontrol/NEWS
index 055878a..b255f8f 100644
--- a/gsmartcontrol/NEWS
+++ b/gsmartcontrol/NEWS
@@ -1,6 +1,11 @@
+Version 1.1.3, released on 2017-11-12
+	Fixed gsmartcontrol-root not launching if GDK_* variables are not set.
+
 Version 1.1.2, released on 2017-11-11
-	Fixed blurriness of icons in main window with GDK_SCALE=2.
-	Tweaked main window interface.
+	Fixed gsmartcontrol-root not passing GDK_SCALE and GDK_DPI_SCALE variables
+	to gsmartcontrol when using PolKit.
+	Fixed blurriness of icons in the main window with GDK_SCALE=2.
+	Tweaked the main window interface.
 	Windows: Show volume labels beside drive letters in icon tooltips.
 
 Version 1.1.1, released on 2017-09-25
diff --git a/gsmartcontrol/configure.ac b/gsmartcontrol/configure.ac
index 072ab03..5a10f97 100644
--- a/gsmartcontrol/configure.ac
+++ b/gsmartcontrol/configure.ac
@@ -1,5 +1,5 @@
 
-AC_INIT([GSmartControl],[1.1.2],[],[gsmartcontrol])
+AC_INIT([GSmartControl],[1.1.3],[],[gsmartcontrol])
 
 AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_HEADERS([config.h])
diff --git a/gsmartcontrol/data/gsmartcontrol-root.in b/gsmartcontrol/data/gsmartcontrol-root.in
index 176e193..50fd643 100644
--- a/gsmartcontrol/data/gsmartcontrol-root.in
+++ b/gsmartcontrol/data/gsmartcontrol-root.in
@@ -138,7 +138,13 @@ if [ "$GSMARTCONTROL_SU" != "" ]; then
 	full_cmd="$GSMARTCONTROL_SU '$EXEC_BIN $final_args_quoted'";
 
 elif [ "$found_su" = "pkexec" ]; then
-	full_cmd="pkexec --disable-internal-agent $EXEC_BIN $final_args_quoted --gdk-scale='$GDK_SCALE' --gdk-dpi-scale='$GDK_DPI_SCALE'";
+	if [ "$GDK_SCALE" != "" ]; then
+		final_args_quoted="$final_args_quoted --gdk-scale='$GDK_SCALE'"
+	fi
+	if [ "$GDK_DPI_SCALE" != "" ]; then
+		final_args_quoted="$final_args_quoted --gdk-dpi-scale='$GDK_DPI_SCALE'"
+	fi
+	full_cmd="pkexec --disable-internal-agent $EXEC_BIN $final_args_quoted";
 
 elif [ "$found_su" = "sux" ]; then
 	full_cmd="xterm -e sux -c '$EXEC_BIN $final_args_quoted'";