diff --git a/compile.sh b/compile.sh
index 6dbe32a..78fe0de 100755
--- a/compile.sh
+++ b/compile.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-if [ $VIRTUAL_ENV=="" ]
+if [ "$VIRTUAL_ENV" == "" ]
 then
   source venv/bin/activate
 fi