diff --git a/src/separator.c b/src/separator.c
index bffa2b3..23902ef 100644
--- a/src/separator.c
+++ b/src/separator.c
@@ -40,7 +40,7 @@ int main(int argc, char *argv[]) {
         name = "";
     }
 
-    if (argc >= 3) {
+    if (argc >= 3 && *argv[2] != 0) {
         separation_character = argv[2];
     } else {
         separation_character = "=";