diff --git a/inject_version.sh b/inject_version.sh
index c0ff92d..37aa1df 100755
--- a/inject_version.sh
+++ b/inject_version.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
-if [ ! TRAVIS_TAG ]; then
-  sed -i "s/define config.version = \"0.1.2\"/define config.version = \"$TRAVIS_COMMIT\"/g" mod/game/options.rpy;
+if [ ! -z TRAVIS_TAG ]; then
+  sed -i "s/config.version = \"0.1.2\"/config.version = \"$TRAVIS_COMMIT\"/g" mod/game/options.rpy;
   cat mod/game/options.rpy | grep config.version;
 else
   sed -i "s/define config.version = \"0.1.2\"/define config.version = \"$TRAVIS_TAG\"/g" mod/game/options.rpy;