diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64e9fee5..f6addabd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
 -
 
 ### Bug Fixes
+- main: suggest --os flag in unsupported OS error message to help users override ELF OS detection @devs6186 #2577
 - render: escape sample-controlled strings before passing to Rich to prevent MarkupError @devs6186 #2699
 - Fixed insecure deserialization vulnerability in YAML loading @0x1622 (#2770)
 - loader: gracefully handle ELF files with unsupported architectures kamranulhaq2002@gmail.com #2800
diff --git a/capa/helpers.py b/capa/helpers.py
index 3b48df42..27c757dc 100644
--- a/capa/helpers.py
+++ b/capa/helpers.py
@@ -327,6 +327,9 @@ def log_unsupported_os_error():
     logger.error(" ")
     logger.error(" capa currently only analyzes executables for some operating systems")
     logger.error(" (including Windows, Linux, and Android).")
+    logger.error(" ")
+    logger.error(" If you know the target OS, you can specify it explicitly, for example:")
+    logger.error("   capa --os linux <sample>")
     logger.error("-" * 80)