diff --git a/src/Bullet3Common/b3CommandLineArgs.h b/src/Bullet3Common/b3CommandLineArgs.h
index 481f95aaf..38df8e260 100644
--- a/src/Bullet3Common/b3CommandLineArgs.h
+++ b/src/Bullet3Common/b3CommandLineArgs.h
@@ -29,7 +29,7 @@ public:
 	    {
 	        std::string arg = argv[i];
 
-	        if ((arg[0] != '-') || (arg[1] != '-')) {
+			if ((arg.length() < 2) || (arg[0] != '-') || (arg[1] != '-')) {
 	        	continue;
 	        }