diff --git a/Makefile b/Makefile
index d16c8bb..d5367ca 100644
--- a/Makefile
+++ b/Makefile
@@ -3,15 +3,18 @@ SHELL:=/bin/bash
 SOURCES=$(find . -name '*.go' -type f)
 
 liblcl-2.2.3.zip:
+	rm -f liblcl-2.2.3.zip
 	wget 'https://github.com/ying32/govcl/releases/download/v2.2.3/liblcl-2.2.3.zip'
 	
 liblcl.so: liblcl-2.2.3.zip
 	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
+	rm -f liblcl.so
 	unzip -j liblcl-2.2.3.zip linux64-gtk2/liblcl.so -d .
 	touch liblcl.so
 
 liblcl.dll: liblcl-2.2.3.zip
 	echo "154b4e4a1d5137a2ffe51cb4d0bf152dd997c12616ae30862775c0e4f0928e88 liblcl-2.2.3.zip" | sha256sum -c
+	rm -f liblcl.dll
 	unzip -j liblcl-2.2.3.zip win64/liblcl.dll -d .
 	touch liblcl.dll