diff --git a/buildDistribution.sh b/buildDistribution.sh
index 1aac67d..98ee41f 100755
--- a/buildDistribution.sh
+++ b/buildDistribution.sh
@@ -44,15 +44,15 @@ done
 echo "goal: $goal";
 echo "platform: $platform";
 
-if [ -z ${goal} ]; then	mvn clean package; else mvn clean ${goal}; fi
+if [ -z $goal ]; then	mvn clean package; else mvn clean ${goal}; fi
 
-if [ -z ${platform} ];
-	then docker build -t smartgears-distribution:${image_version} .;
-	else docker build -t smartgears-distribution:${image_version} --platform=linux/amd64,linux/arm64,linux/arm/v7 . ;
+if [ -z $platform ];
+	then docker build -t smartgears-distribution:$image_version .;
+	else docker build -t smartgears-distribution:$image_version --platform=linux/amd64,linux/arm64,linux/arm/v7 . ;
 fi
 
-docker tag smartgears-distribution:${image_version} d4science/smartgears-distribution:${image_version}
+docker tag smartgears-distribution:$image_version d4science/smartgears-distribution:$image_version
 
 if [ ${push} = true ]; then
-	docker push d4science/smartgears-distribution:${image_version};
+	docker push d4science/smartgears-distribution:$image_version;
 fi
\ No newline at end of file