diff --git a/configure.ac b/configure.ac
index 8701ad9..a0503a4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -140,8 +140,6 @@ AC_CHECK_HEADERS([sys/ioctl.h alloca.h memory.h malloc.h sysexits.h \
 
 dnl Checks for libary functions
 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
-AC_FUNC_MALLOC
-AC_FUNC_REALLOC
 
 AC_CHECK_FUNCS([strlcpy strlcat setgroups])