diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -14,13 +14,13 @@
 AC_CHECK_HEADERS([stddef.h stdint.h stdlib.h string.h unistd.h])
 AC_CHECK_LIB([dl], [main])
 
-case $host_os in
-   mingw* )
-      AC_SUBST(FLTKCONFIGCOMMAND,"$(fltk-config --ldflags --use-gl --use-glut --use-images --use-forms) -lstdc++")
-      ;;
-   *)
-      AC_SUBST(FLTKCONFIGCOMMAND,"$(fltk-config --ldstaticflags --use-gl --use-glut --use-images --use-forms) -lstdc++")
-      ;;
+case $MSYSTEM in
+*MINGW*)
+   AC_SUBST(FLTKCONFIGCOMMAND,"$(fltk-config --ldflags --use-gl --use-glut --use-images --use-forms) -lstdc++")
+   ;;
+*)
+   AC_SUBST(FLTKCONFIGCOMMAND,"$(fltk-config --ldstaticflags --use-gl --use-glut --use-images --use-forms) -lstdc++")
+   ;;
 esac
 
 AC_SUBST(FLTK_HOME,`fltk-config --includedir`)
diff --git a/fltkhs.cabal b/fltkhs.cabal
--- a/fltkhs.cabal
+++ b/fltkhs.cabal
@@ -1,5 +1,5 @@
 name : fltkhs
-version : 0.5.0.5
+version : 0.5.0.6
 synopsis : FLTK bindings
 description:
     Low level bindings for the FLTK GUI toolkit. For installation and quick start instruction please scroll all the way down to the README.