diff --git a/configure b/configure
index 843fbde8dd..6746d47e95 100755
--- a/configure
+++ b/configure
@@ -35027,53 +35027,6 @@ $as_echo "$wx_cv_type_abi_forced_unwind" >&6; }
         fi
       fi
     fi
-else
-    if test "$wxUSE_THREADS" = "yes" ; then
-      case "${host}" in
-        x86_64-*-mingw* )
-        ;;
-        *-*-mingw32* )
-                        { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler supports -mthreads" >&5
-$as_echo_n "checking if compiler supports -mthreads... " >&6; }
-if ${wx_cv_cflags_mthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-                    CFLAGS_OLD="$CFLAGS"
-                    CFLAGS="-mthreads $CFLAGS"
-                    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  wx_cv_cflags_mthread=yes
-else
-  wx_cv_cflags_mthread=no
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $wx_cv_cflags_mthread" >&5
-$as_echo "$wx_cv_cflags_mthread" >&6; }
-
-            if test "$wx_cv_cflags_mthread" = "yes"; then
-                                WXCONFIG_CFLAGS="$WXCONFIG_CFLAGS -mthreads"
-                LDFLAGS="$LDFLAGS -mthreads"
-            else
-                                CFLAGS="$CFLAGS_OLD"
-            fi
-        ;;
-      esac
-    fi
 fi
 
 ac_fn_c_check_func "$LINENO" "localtime_r" "ac_cv_func_localtime_r"
diff --git a/configure.in b/configure.in
index 1decd18065..1718003536 100644
--- a/configure.in
+++ b/configure.in
@@ -4240,11 +4240,9 @@ dnl flush the cache
 AC_CACHE_SAVE
 
 dnl ---------------------------------------------------------------------------
-dnl thread support for Unix (for Win32 and OS/2 see past
-dnl                          the next matching "else")
+dnl thread support for Unix (other platforms don't need anything special)
 dnl ---------------------------------------------------------------------------
 
-dnl under MSW (except mingw32) we always have thread support
 if test "$TOOLKIT" != "MSW"; then
 
     dnl the code below:
@@ -4624,37 +4622,6 @@ if test "$TOOLKIT" != "MSW"; then
         fi
       fi
     fi
-dnl from if !MSW
-else
-    if test "$wxUSE_THREADS" = "yes" ; then
-      case "${host}" in
-        x86_64-*-mingw* )
-        ;;
-        *-*-mingw32* )
-            dnl check if the compiler accepts -mthreads
-            AC_CACHE_CHECK([if compiler supports -mthreads],
-                wx_cv_cflags_mthread,
-                [
-                    CFLAGS_OLD="$CFLAGS"
-                    CFLAGS="-mthreads $CFLAGS"
-                    AC_TRY_COMPILE([], [],
-                        wx_cv_cflags_mthread=yes,
-                        wx_cv_cflags_mthread=no
-                    )
-                ]
-            )
-
-            if test "$wx_cv_cflags_mthread" = "yes"; then
-                dnl it does, use it
-                WXCONFIG_CFLAGS="$WXCONFIG_CFLAGS -mthreads"
-                LDFLAGS="$LDFLAGS -mthreads"
-            else
-                dnl it doesn't
-                CFLAGS="$CFLAGS_OLD"
-            fi
-        ;;
-      esac
-    fi
 fi
 
 AC_CHECK_FUNC(localtime_r, [ AC_DEFINE(HAVE_LOCALTIME_R) ])