diff --git a/configure.ac b/configure.ac
index 0622a5c9..9858a117 100644
--- a/configure.ac
+++ b/configure.ac
@@ -387,7 +387,7 @@ AC_SUBST([FORKPTY_LIB])
 ## Default parameters
 AM_CFLAGS="$AM_CFLAGS -Wall -Wextra -Wformat=2 -Wno-format-zero-length"
 AM_CFLAGS="$AM_CFLAGS -Wno-deprecated-declarations -Wno-unused-parameter -Wno-missing-field-initializers -Wno-sign-compare -Wno-cast-function-type"
-AM_CFLAGS="$AM_CFLAGS -Wnull-dereference -Wpointer-arith"
+AM_CFLAGS="$AM_CFLAGS -Wpointer-arith"
 AM_CFLAGS="$AM_CFLAGS -Wimplicit-function-declaration"
 AM_CFLAGS="$AM_CFLAGS -Wundef"
 AM_CFLAGS="$AM_CFLAGS -Wfloat-equal -Wredundant-decls"