diff --git a/include/parlay/internal/uninitialized_sequence.h b/include/parlay/internal/uninitialized_sequence.h
index c288bfa6..bc9a2e9b 100644
--- a/include/parlay/internal/uninitialized_sequence.h
+++ b/include/parlay/internal/uninitialized_sequence.h
@@ -168,7 +168,7 @@ class uninitialized_sequence {
   value_type& at(size_t i) {
     if (i >= size()) {
       std::cerr << "uninitialized_sequence access out of bounds: length = " +
-                              std::to_string(size()) + ", index = " + std::to_string(i) << std::endl:
+                              std::to_string(size()) + ", index = " + std::to_string(i) << std::endl;
       exit(-1);
     }
     else {