diff --git a/recipes/boost/all/conanfile.py b/recipes/boost/all/conanfile.py
index 80810767aa07b..f60245c03254b 100644
--- a/recipes/boost/all/conanfile.py
+++ b/recipes/boost/all/conanfile.py
@@ -474,10 +474,11 @@ def _run_python_script(self, script):
         except ConanException:
             self.output.info("(failed)")
             return None
-        output = output.getvalue().strip()
+        output = output.getvalue()
         # Conan is broken when run_to_output = True
         if "\n-----------------\n" in output:
             output = output.split("\n-----------------\n", 1)[1]
+        output = output.strip()
         return output if output != "None" else None
 
     def _get_python_path(self, name):