diff --git a/configure.ac b/configure.ac
index 88d162a5c..c27479607 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,19 +52,6 @@ PKG_PROG_PKG_CONFIG([0.21])
 # Sets GLIB_GENMARSHAL and GLIB_MKENUMS
 AM_PATH_GLIB_2_0()
 
-#### Integer sizes
-
-AC_CHECK_SIZEOF(char)
-AC_CHECK_SIZEOF(short)
-AC_CHECK_SIZEOF(long)
-AC_CHECK_SIZEOF(int)
-AC_CHECK_SIZEOF(void *)
-AC_CHECK_SIZEOF(long long)
-AC_CHECK_SIZEOF(__int64)
-
-## byte order
-AC_C_BIGENDIAN
-
 CANBERRA_GTK=libcanberra-gtk3
 CANBERRA_GTK_VERSION=0.26