diff --git a/lib/lg2_logger.cpp b/lib/lg2_logger.cpp
index 3276499..3c61003 100644
--- a/lib/lg2_logger.cpp
+++ b/lib/lg2_logger.cpp
@@ -207,9 +207,12 @@
     std::cerr << std::endl;
 }
 
-// Use the cerr output method if we are on a TTY.
+// Use the cerr output method if we are on a TTY or if explicitly set via
+// environment variable.
 static auto extra_output_method =
-    isatty(fileno(stderr)) ? cerr_extra_output : noop_extra_output;
+    (isatty(fileno(stderr)) || nullptr != getenv("LG2_FORCE_STDERR"))
+        ? cerr_extra_output
+        : noop_extra_output;
 
 // Do_log implementation.
 void do_log(level l, const lg2::source_location& s, const char* m, ...)