diff --git a/packages/python/security/pycrypto/build b/packages/python/security/pycrypto/build
index ba3aaa50c4..45619ac4db 100755
--- a/packages/python/security/pycrypto/build
+++ b/packages/python/security/pycrypto/build
@@ -27,6 +27,8 @@ export PYTHONXCPREFIX="$SYSROOT_PREFIX/usr"
 export LDFLAGS="$LDFLAGS -L$SYSROOT_PREFIX/usr/lib -L$SYSROOT_PREFIX/lib"
 
 cd $PKG_BUILD
+ac_cv_func_realloc_0_nonnull=yes \
+ac_cv_func_malloc_0_nonnull=yes \
 ./configure --host=$TARGET_NAME \
             --build=$HOST_NAME \
             --prefix=/usr \