diff --git a/xbill/configure b/xbill/configure
index 021263f..d697af5 100755
--- a/xbill/configure
+++ b/xbill/configure
@@ -2541,8 +2541,8 @@ fi
 #define USE_GTK 1
 EOF
 
-		GTK_CFLAGS="`gtk-config --cflags`"
-		WIDGET_LIBS="$WIDGET_LIBS `gtk-config --libs`"
+		GTK_CFLAGS="`pkg-config --cflags gtk+`"
+		WIDGET_LIBS="$WIDGET_LIBS `pkg-config --libs gtk+`"
 		WIDGET_OBJS="$WIDGET_OBJS gtk.o"
 	fi
 fi