diff --git a/smmapdfw/configure.ac b/smmapdfw/configure.ac
index b0ebec4..0730df9 100644
--- a/smmapdfw/configure.ac
+++ b/smmapdfw/configure.ac
@@ -107,8 +107,8 @@ AC_CHECK_TYPES(socklen_t)
 
 # Checks for library functions.
 AC_FUNC_FORK
-AC_FUNC_MALLOC
-AC_FUNC_REALLOC
+dnl AC_FUNC_MALLOC
+dnl AC_FUNC_REALLOC
 AC_FUNC_SELECT_ARGTYPES
 AC_CHECK_FUNCS([inet_ntoa memset select socket strchr strdup strerror strrchr strtol dlopen dlsym dlerror], [],
                [AC_MSG_ERROR([*** missing function, we can't go without it])])