diff --git a/tools/jfjoch_lite_perf_test.cpp b/tools/jfjoch_lite_perf_test.cpp
index 98f50909..2f7ab6a5 100644
--- a/tools/jfjoch_lite_perf_test.cpp
+++ b/tools/jfjoch_lite_perf_test.cpp
@@ -52,7 +52,7 @@ int main(int argc, char **argv) {
     }
 
     int opt;
-    while ((opt = getopt(argc, argv, "N:P:i:F::QvX:t:f:")) != -1) {
+    while ((opt = getopt(argc, argv, "N:P:i:F::QGvX:t:f:")) != -1) {
         switch (opt) {
             case 'N':
                 nthreads = atol(optarg);