diff --git a/configure.ac b/configure.ac
index 232bf02..ddbeb59 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,11 +60,6 @@ XORG_DRIVER_CHECK_EXT(XV, videoproto)
 # Obtain compiler/linker options for the driver dependencies
 PKG_CHECK_MODULES(XORG, [xorg-server >= 1.18 xproto $REQUIRED_MODULES])
 
-# Checks for library functions
-# We don't use strlcat or strlcpy, but check to quiet a -Wredundant-decls warning
-# from xorg/os.h which will otherwise redefine it.
-AC_CHECK_FUNCS([strlcat strlcpy])
-
 AC_SUBST([moduledir])
 
 DRIVER_NAME=v4l