diff --git a/azkaban-solo-server/src/main/bash/azkaban-solo-start.sh b/azkaban-solo-server/src/main/bash/azkaban-solo-start.sh
index 6bd5207..1dfd99a 100755
--- a/azkaban-solo-server/src/main/bash/azkaban-solo-start.sh
+++ b/azkaban-solo-server/src/main/bash/azkaban-solo-start.sh
@@ -25,7 +25,7 @@ fi
CLASSPATH="${CLASSPATH:-}:${installdir}/lib/*:${installdir}/extlib/*"
-HADOOP_HOME=${HADOOP_HOME:""} # needed for set -o nounset aove
+HADOOP_HOME=${HADOOP_HOME:-""} # needed for set -o nounset aove
if [ "$HADOOP_HOME" != "" ]; then
echo "Using Hadoop from $HADOOP_HOME"
@@ -35,13 +35,13 @@ else
echo "Error: HADOOP_HOME is not set. Hadoop job types will not run properly."
fi
-HIVE_HOME=${HIVE_HOME:""} # Needed for set -o nounset above
+HIVE_HOME=${HIVE_HOME:-""} # Needed for set -o nounset above
if [ "$HIVE_HOME" != "" ]; then
echo "Using Hive from $HIVE_HOME"
CLASSPATH="${CLASSPATH}:${HIVE_HOME}/conf:${HIVE_HOME}/lib/*"
fi
-CLASSPATH=${CLASSPATH:""} # Needed for set -o nounset above
+CLASSPATH=${CLASSPATH:-""} # Needed for set -o nounset above
echo "CLASSPATH: ${CLASSPATH}";
executorport=$(grep executor.port "${conf}/azkaban.properties" | cut -d = -f 2)
