diff --git a/src/repstr/main.cpp b/src/repstr/main.cpp
index 129ca8d..9604a91 100644
--- a/src/repstr/main.cpp
+++ b/src/repstr/main.cpp
@@ -45,6 +45,8 @@ int main(const int argc,const char *argv[]){
         zt::print(argv1,"\n");
 
     }catch(std::runtime_error &e){
-        zt::eprint("caught an error because:\n","\te.what(): ",e.what(),"\n");
+        zt::eprint("Caught an error because:\n","\te.what(): ",e.what(),"\n");
+    }catch(...){
+        zt::eprint("Caught an unknown error,closing...\n");
     }
 }
\ No newline at end of file