diff --git a/run.sh b/run.sh
index 3de2df71e21ba8261a68fa4bdd53b25d30f22f3b..9fd74371e2f52ae55deaceec643b1d4b14c2ad0e 100755
--- a/run.sh
+++ b/run.sh
@@ -6,5 +6,6 @@ REDUCTION_SIZE=$2
 
 # Get path to this run.sh script
 basedir=$( cd "$(dirname "$0")" ; pwd -P )
+mkdir -p output
 
 python ${basedir}/gdal_wrapper.py --input_file ${INPUT_FILENAME} --output_file output/${OUTPUT_FILENAME} --outsize ${REDUCTION_SIZE}