diff --git a/scripts/build_database.sh b/scripts/build_database.sh
index 936900d..2049893 100755
--- a/scripts/build_database.sh
+++ b/scripts/build_database.sh
@@ -224,7 +224,7 @@ then
 fi
 
 # This is required for the sort command to use the correct temp directory
-EXPORT TMPDIR="$TEMP_DIR"
+export TMPDIR="$TEMP_DIR"
 
 BUILD_TYPE="$1"