diff --git a/fuzz.sh b/fuzz.sh
index 31a2af8..9caf204 100755
--- a/fuzz.sh
+++ b/fuzz.sh
@@ -1,7 +1,9 @@
 #!/usr/bin/env bash
 
+FUZZTIME=${FUZZTIME:-10s}
+
 for t in `go test -list Fuzz ./pkg/parse | egrep -v '^(ok|\?)'`; do
     echo $t
-    go test -fuzz="^${t}$" -fuzztime=10s ./pkg/parse
+    go test -fuzz="^${t}$" -fuzztime=$FUZZTIME ./pkg/parse
     echo "---"
 done;