diff --git a/bindings/Makefile b/bindings/Makefile
index ed958f75..fa488af3 100644
--- a/bindings/Makefile
+++ b/bindings/Makefile
@@ -9,7 +9,7 @@ SAMPLE := $(SAMPLE:sample_batch_reg=)
 SAMPLE := $(SAMPLE:sample_x86_32_gdt_and_seg_regs=)
 SAMPLE := $(SAMPLE:shellcode=)
 
-ENV_VARS = LD_LIBRARY_PATH=../ DYLD_LIBRARY_PATH=../
+ENV_VARS = LD_PRELOAD=librt.so LD_LIBRARY_PATH=../ DYLD_LIBRARY_PATH=../
 
 .PHONY: build install python c clean check test