diff --git a/entrypoint.sh b/entrypoint.sh
index 150a669..4c4efcd 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -37,10 +37,11 @@ _git_push() {
 
 # PROGRAM
 echo "Installing prettier..."
-if $INPUT_PRETTIER_VERSION; then
-  npm install --silent --global prettier@$INPUT_PRETTIER_VERSION
-else
+if ! $INPUT_PRETTIER_VERSION; then
   npm install --silent --global prettier
+
+else
+  npm install --silent --global prettier@$INPUT_PRETTIER_VERSION
 fi
 
 echo "Prettifing files..."