diff --git a/Makefile b/Makefile
index 536e83f..3ebed5e 100644
--- a/Makefile
+++ b/Makefile
@@ -7,5 +7,5 @@ TARGET = /usr/local/bin/ihsec
 install: bash
 
 bash:
-	if [[ "$OSTYPE" == "darwin"* ]]; then cp ihsec.sh ${TARGET}; chmod 755 ${TARGET}; else install -D -m 755 ihsec.sh ${TARGET}; fi
+	if [[ "$$OSTYPE" == "darwin"* ]]; then cp ihsec.sh ${TARGET}; chmod 755 ${TARGET}; else install -D -m 755 ihsec.sh ${TARGET}; fi